A ransomware attack now costs businesses an average of $5.08 million once downtime is factored in, and outages routinely run 50 times longer than the ransom demand itself, according to recent BCDR industry data. That math is why disaster recovery as a service, or DRaaS, has become one of the fastest-growing line items in cloud budgets for September 2026. The market sits at roughly $13.7 billion to $16.1 billion in 2025 and is on pace to hit $26.6 billion to $46.1 billion by the early 2030s, a compound annual growth rate between 11.7% and 16.2%, per Mordor Intelligence.
The three hyperscalers each sell a native answer: AWS Elastic Disaster Recovery (AWS DRS), Azure Site Recovery (ASR), and Google Cloud Backup and DR Service. They are not the same product wearing three different logos. AWS bills a flat hourly fee per replicating server no matter how much data moves. Azure charges per protected instance with a 31-day grace period. Google skips the per-server fee entirely and bills by the gigabyte, which changes the math completely depending on whether you are protecting ten fat database servers or a thousand thin web nodes. This comparison breaks down the pricing, the recovery speed, the platform support, and where third-party tools like Zerto and Veeam still make sense instead of the cloud-native option.
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What Disaster Recovery as a Service Actually Means in 2026
DRaaS replicates your production servers, virtual machines, or data continuously (or on a schedule) to a secondary location so you can fail over within minutes or hours instead of rebuilding from tape. It differs from ordinary backup in one key way: backup gets your data back, DRaaS gets your running application back, including compute, networking, and boot order. The two recovery metrics that matter are recovery point objective (RPO), how much data you can afford to lose, and recovery time objective (RTO), how long you can afford to be down.
All three cloud providers frame their offerings around these two numbers, but they hit very different points on the RPO/RTO spectrum depending on which service tier and replication pattern you pick. A team that only needs to survive a regional outage once every few years has very different requirements than a hospital network protecting patient records under strict RTO mandates, and the pricing models below make that distinction expensive to get wrong.
The DRaaS market itself is not evenly distributed. North America holds roughly 37% to 38.5% of global revenue share in 2025, and fully-managed offerings account for close to half of all DRaaS spend, according to the same Mordor Intelligence data set. That concentration matters for buyers: most of the published pricing, benchmark, and case-study data available for this comparison skews toward US-region rates, so teams evaluating international regions should confirm local pricing directly rather than assuming the US numbers below translate one-to-one.
AWS Elastic Disaster Recovery: How It Works and What It Costs
AWS Elastic Disaster Recovery, the successor to CloudEndure Disaster Recovery, replicates at the block level using an agent installed on every source server, whether that server is on-premises VMware, a physical box, or a workload sitting on another cloud. According to the official AWS pricing page, the service charges a flat $0.028 per source server per hour, which works out to roughly $20.44 a month per server, regardless of disk count, data volume, or how many test drills you run. AWS’s own documentation puts the platform’s RPO in the sub-second range with RTO typically measured in minutes, since replication is continuous rather than snapshot-based.
The $20.44 line item is only part of the real bill. Staging-area EC2 instances, EBS volumes for continuous replication, and EBS snapshots all get charged at standard AWS rates on top of the DRS platform fee. AWS’s own cost-optimization blog post estimates total DR cost lands closer to $64 per server per month once staging infrastructure is included, with the DRS fee itself covering roughly a third of that. There is no dedicated free trial for DRS specifically. Every protected server starts billing from day one, though new AWS accounts can offset some of that with general Free Tier credits on the underlying EC2 and S3 usage.
What Changed for AWS DRS in Late 2026
AWS shipped a recovery plans feature in its September 2026 release notes that lets teams recover groups of source servers in a defined sequence with configurable wait times between groups, useful for multi-tier applications where the database needs to boot before the app servers. Test launches and recovery launches are included in the hourly fee, meaning drills do not carry a separate line-item charge beyond the compute and storage the drill consumes.
Azure Site Recovery: How It Works and What It Costs
Azure Site Recovery bills per protected instance rather than per server-hour, and it front-loads a genuinely useful perk: every newly protected instance gets its first 31 days free, per the official Azure Site Recovery pricing page. After that grace period, replicating to a customer-owned site runs $16 per instance per month, while replicating into Azure itself (including Azure-to-Azure cross-region DR) costs $25 per instance per month. Those figures cover the licensing fee only. Replica storage, storage transactions, outbound data transfer, and any compute spun up during failover or test drills all bill separately at standard Azure rates.
ASR supports VMware vSphere, Hyper-V, physical Windows and Linux servers, and Azure VM-to-VM replication, using a Mobility Service agent for VMware and physical sources. RPO depends heavily on the scenario. Azure-to-Azure replication with continuous data protection can push RPO down to minutes, while some periodic-replication configurations land in the range of hours. Microsoft’s own documentation frames the platform around test failovers that run in an isolated network without touching production, which lets teams drill quarterly or monthly without risking an outage during the test itself.
What Changed for Azure Site Recovery in Late 2026
Microsoft’s feature updates page confirms ASR added support in August 2026 for replicating and protecting Linux Azure VMs running on NVMe-enabled Generation 2 VM families, covering the Da/Ea/Fa v6-series along with Ddsv6, Edsv6, and Ebsv5/Ebdsv5 instances in Azure-to-Azure scenarios. That closes a gap for teams running newer, storage-optimized VM SKUs that previously fell outside supported replication targets. Base licensing pricing has held steady at $16/$25 per instance through 2026 with no announced increase.
Google Cloud Backup and DR: How It Works and What It Costs
Google takes the most different approach of the three. Backup and DR Service, described on the Google Cloud product page, charges nothing per server or per instance. Instead it bills on a consumption model with separate meters for vault storage and backup management. Per the official pricing documentation, vault storage in us-central1 runs about $0.045 per GiB per month, while the management fee for protected capacity varies by resource type, roughly $0.01 per GiB-month for Compute Engine disks and $0.05 to $0.09 per GiB-month for managed databases like Cloud SQL and SQL Server.
That per-gigabyte model means Google is often the cheapest option for large numbers of small, low-change-rate servers and can get expensive fast for a handful of database-heavy workloads with large storage footprints. Google offers a 30-day evaluation window during which backup management and vault storage charges don’t apply, a longer runway than AWS’s day-one billing but shorter than the license-only free period Azure grants.
Recovery targets vary by which DR pattern you build. Google’s reference architecture lays out four tiers: backup-and-restore (RTO in hours to days, RPO in hours), cold standby (RTO in tens of minutes to hours), warm standby (RTO in minutes, RPO in seconds to minutes), and hot/active-active (near-zero RTO and RPO). Backup and DR Service by itself lands in the backup-and-restore tier. To hit warm-standby numbers, Google pairs it with Persistent Disk Asynchronous Replication, which the company says delivers sub-one-minute RPO for Compute Engine workloads replicated across regions.
What Changed for Google Cloud Backup and DR in Late 2026
Google’s release notes flagged a fix in July 2026 to how SAP HANA management charges get calculated, shifting the meter from allocated disk size to actual data used, which lowers the bill for HANA environments with large provisioned-but-empty volumes. The pricing table itself was refreshed in August 2026 with more granular per-GiB-hour meters across resource types, a sign Google is still actively tuning the cost model rather than treating it as settled.
Full Specs Comparison: AWS DRS vs Azure Site Recovery vs Google Cloud Backup and DR
| Spec | AWS Elastic Disaster Recovery | Azure Site Recovery | Google Cloud Backup and DR |
|---|---|---|---|
| Pricing model | Flat per-server-hour | Per protected instance/month | Per-GiB storage + management |
| Base price | $0.028/server-hour (~$20.44/mo) | $16/mo (to own site) or $25/mo (to Azure) | ~$0.045/GiB-mo vault + ~$0.01-$0.09/GiB-mo management |
| Free trial | None (billed from day one) | 31 days free per instance | 30-day evaluation, no management/vault charge |
| Best-case RPO | Sub-second (continuous block replication) | Minutes (Azure-to-Azure CDP) | Sub-1-minute with Persistent Disk Async Replication |
| Typical RTO | Minutes, under 1 hour for most workloads | Tens of minutes to a few hours | Minutes (warm standby) to hours (backup-restore) |
| Replication type | Agent-based, continuous block-level | Agent-based (Mobility Service) or platform-native | Backup agents + native disk replication |
| Source platforms | VMware, physical servers, other clouds | VMware, Hyper-V, physical, Azure VMs | GCP VMs/disks, Cloud SQL, SQL Server, some on-prem |
| Non-disruptive test drills | Included in hourly fee | Test failover to isolated network | Test restores into isolated project/subnet |
| Failback support | Automated, standard egress fees apply | Yes, reverse replication | Restore-oriented, not continuous reverse replication |
| Multi-region replication | Yes, region-selectable | Yes, Azure-to-Azure supported | Yes, cross-region vault + Persistent Disk async |
| Compliance posture | Inherits AWS SOC 1/2/3, ISO 27001, HIPAA-eligible | Inherits Azure SOC, ISO 27001, HIPAA BAA, FedRAMP (gov regions) | Inherits Google Cloud SOC, ISO 27001, select HIPAA/FedRAMP |
| 2026 feature update | Ordered recovery plans (Sept 2026) | NVMe Gen2 VM family support (Aug 2026) | SAP HANA billing fix, refreshed meters (Jul-Aug 2026) |
Pricing Comparison: Real Monthly Cost Scenarios
List prices only tell part of the story. Here is how the three platforms compare across different workload shapes, using published 2026 rates and typical utilization assumptions.
| Scenario | AWS Elastic Disaster Recovery | Azure Site Recovery | Google Cloud Backup and DR |
|---|---|---|---|
| 1 server, license/platform fee only | ~$20.44/mo | $16-$25/mo (after 31-day trial) | N/A, storage-based |
| 1 server, full cost incl. staging infra | ~$64/mo (AWS’s own estimate) | $16-$25 license + replica storage/egress, often $60-$120/mo total | ~$0.045-$0.09/GiB-mo, e.g. $2.25-$4.50/mo per 50GB server |
| 100 servers, always-on replication | ~$2,044/mo license, ~$6,400/mo all-in (AWS example) | ~$1,600-$2,500/mo license, plus storage/egress | Scales per GiB, cost-efficient for many small/light servers |
| Best fit by cost shape | Predictable per-server workloads, tight RPO | Hybrid VMware/Hyper-V estates already on Azure | Large fleets of low-change-rate or small servers |
The pattern that falls out of this table: AWS DRS punishes idle capacity least because the fee is flat per server regardless of data volume, which makes it predictable for budgeting but expensive if you are protecting mostly-idle test or staging servers around the clock. Azure’s 31-day free window is genuinely valuable for short-lived DR exercises or proof-of-concept environments, since you can run a full drill cycle without incurring license charges at all. Google’s per-GiB model rewards teams with lots of small, compressible, low-churn servers and penalizes anyone protecting a handful of large, high-change databases, since the management fee scales with protected capacity rather than server count.
RPO and RTO: Which Platform Actually Recovers Faster
On paper, AWS DRS wins the RPO race outright. Continuous block-level replication with no snapshot interval means data loss in a failover scenario can be measured in seconds rather than minutes, a meaningful edge for transaction-heavy workloads like payment processing or order management where every minute of lost writes has a dollar figure attached. One 2024 industry analysis of DR deployments found that a majority of AWS DRS customers achieved RTO under one hour, often landing in the tens-of-minutes range once launch templates and staging capacity were pre-configured.
Azure Site Recovery’s numbers depend heavily on which replication pattern you choose. Azure-to-Azure continuous replication competes closely with AWS DRS on RPO, but VMware-to-Azure and Hyper-V-to-Azure scenarios that rely on periodic replication windows can see RPO drift into the minutes-to-hours range depending on configuration and available bandwidth. The same 2024 industry review found organizations moving from legacy tape-based DR to ASR cut RTO from roughly 24 hours down to about 4 hours, a dramatic improvement even if it trails AWS DRS’s sub-hour benchmark for pure server replication.
Google Cloud sits at the opposite end by default. Backup and DR Service alone is a backup product, so its native RPO lands in the hours range and RTO can stretch to hours or days for a full restore-from-backup recovery. The gap closes considerably once you add Persistent Disk Asynchronous Replication on top, which Google states delivers sub-one-minute RPO for Compute Engine disks replicated cross-region, putting the combined stack roughly on par with Azure’s warm-standby tier. The tradeoff is architectural complexity: you are now managing two separate DR mechanisms instead of one integrated service.
Network and Bandwidth Requirements for Each Platform
None of the three vendors publishes a single hard bandwidth number, but the underlying replication mechanics dictate very different network profiles. AWS DRS replicates every block-level write continuously, so its RPO is directly tied to available uplink bandwidth from the source environment. When bandwidth is constrained, AWS’s own guidance and third-party setup guides note that RPO drifts from the advertised sub-second range out to minutes, and write-heavy database servers in particular need enough sustained throughput to avoid a growing replication backlog.
Azure Site Recovery has similar sensitivity for VMware and Hyper-V sources, where Microsoft recommends dedicated connections such as ExpressRoute for enterprise-scale replication rather than relying on best-effort internet links. Azure-to-Azure replication sidesteps this concern almost entirely since traffic stays inside Microsoft’s backbone rather than crossing the public internet. Google Cloud Backup and DR is the most forgiving of the three on raw bandwidth because its default mode operates on scheduled backup windows rather than continuous streaming, though Persistent Disk Asynchronous Replication reintroduces a continuous-replication bandwidth requirement once you add it for tighter RPO. Teams sizing a DR network link should treat the platform’s replication model, not just total data volume, as the primary bandwidth-planning input.
Market Adoption: What Analysts Say About DRaaS in 2026
Public market research treats the DRaaS category somewhat differently than most buyers expect. Gartner and Forrester’s analyst coverage, referenced in the firms’ respective market sizing reports, tends to evaluate traditional managed DRaaS providers such as Sungard AS, IBM, and 11:11 Systems (formerly iland) as a distinct category from the native hyperscaler offerings covered here, which are more often assessed as a feature of the broader cloud infrastructure platform rather than a standalone DRaaS product line.
That distinction is worth understanding before an RFP goes out, since a procurement team searching “top DRaaS providers” will surface a mix of managed service providers and hyperscaler-native tools that are not directly comparable on the same scorecard. Backup and recovery services make up roughly 35% of the overall DRaaS service-type market by revenue, and public cloud deployment accounts for nearly half of DRaaS spend overall, reflecting how thoroughly cloud-native replication has displaced the colocation-based DR sites that dominated the category a decade ago.
Where Zerto and Veeam Still Beat the Native Cloud Options
Not every DR strategy should run on a single hyperscaler’s native tooling, and two third-party platforms dominate the conversation whenever multi-cloud or ransomware-resilience requirements come up. Zerto, now under HPE, built its reputation on journal-based continuous data protection that can hit recovery points seconds apart across VMware, Hyper-V, and all three major clouds simultaneously. Typical Zerto subscriptions run $150 to $500 per protected VM per year at the standard tier, climbing to $1,400 to $2,200 per VM annually for fully-featured enterprise editions, according to 2025-2026 market pricing summaries. That is a real premium over AWS DRS’s roughly $245 annual run rate per server, but Zerto buys platform independence: the same tool can protect a VMware cluster failing over to AWS today and Azure next quarter without re-architecting.
Veeam takes a different path, selling backup and replication software that partners then package into DRaaS offerings rather than running its own cloud DR service. Veeam Universal License subscriptions range roughly $250 to $600 per protected workload per year depending on edition, and a free Community Edition covers up to 10 workloads for smaller teams testing the waters. Because Veeam is vendor-neutral by design, it fits organizations that want to keep their DR target flexible between multiple service providers or hybrid environments rather than committing to a single hyperscaler’s replication engine.
The practical rule: if your entire estate already lives in one cloud, the native DRaaS service is nearly always cheaper and simpler to operate. If you run a genuinely multi-cloud or hybrid VMware footprint, or ransomware-resilient immutable recovery points are a hard requirement, Zerto or a Veeam-powered DRaaS provider earns its premium.
5 Real-World Cost Scenarios Worth Modeling Before You Commit
These scenarios use the published 2026 pricing above to model what different workload profiles would actually pay, since generic per-unit pricing rarely reflects the bill a specific team sees.
1. SaaS Startup Protecting 8 Application Servers
A small SaaS company running 8 mid-sized application servers (roughly 100GB each) on AWS DRS pays about $163.52/month in platform fees alone, climbing toward $500/month once staging EC2 and EBS snapshot costs are added. The same footprint on Azure Site Recovery, replicating Azure-to-Azure, runs $200/month in licensing after the 31-day trial expires, plus storage. On Google Cloud Backup and DR, that same 800GB of protected capacity costs roughly $36-$72/month in vault storage plus management fees, making Google the clear budget winner for this profile, assuming the team can tolerate hours-scale RTO rather than minutes-scale.
2. Regional Hospital Network With Strict RTO Mandates
A healthcare provider running 40 servers that must meet sub-hour RTO for patient record systems is a strong AWS DRS or Azure Site Recovery candidate, not a Backup and DR Service candidate, because compliance mandates typically rule out hours-scale recovery. At 40 servers, AWS DRS runs about $818/month in platform fees before staging infrastructure, while ASR lands around $640 to $1,000/month depending on the Azure-to-Azure vs to-Azure split. The compliance requirement here outweighs the cost gap. Google’s backup-first model would need the added Persistent Disk Asynchronous Replication layer to even compete on RTO, adding architectural overhead a lean IT team may not want to own.
3. E-Commerce Platform During Peak Season Scaling
An e-commerce operation running 25 servers that scale up during holiday traffic benefits from AWS DRS’s flat per-server pricing because the fee does not spike with data volume during high-write periods, unlike Google’s per-GiB model, which would see management fees climb as transaction logs grow. At 25 servers, AWS DRS runs roughly $511/month in platform fees, a predictable number finance teams can budget against regardless of Black Friday traffic patterns.
4. Financial Services Firm With Multi-Cloud Compliance Requirements
A regulated financial services firm required to prove DR independence from any single cloud vendor is the textbook Zerto or Veeam-powered DRaaS use case. At $150 to $500 per VM per year for a 60-VM environment, Zerto runs $9,000 to $30,000 annually, a premium over single-cloud native DR, but it satisfies audit requirements that a single-vendor AWS or Azure solution cannot on its own. One 2024 industry review documented a large financial services organization cutting annual DR costs by 45% and improving RTO from 4 hours to 30 minutes after consolidating onto AWS DRS for its AWS-native workloads specifically, illustrating that native tooling still wins for the portion of the estate that is genuinely single-cloud.
5. Media Company With Large, Low-Change Storage Footprint
A media company protecting 15 file servers holding 5TB each of largely static video assets is the ideal Google Cloud Backup and DR case. At roughly $0.045/GiB-month for vault storage, 75TB of protected capacity costs around $3,450/month in raw storage, which sounds steep until you compare it against AWS DRS’s flat $20.44/server fee times 15 servers ($306.60/month in license alone) plus the underlying storage costs for continuous block replication of that same 75TB, which typically runs higher than Google’s tiered vault pricing for cold, low-change data. The lesson: total protected data volume, not just server count, has to drive the platform choice.
5 Use Cases and Which Platform Fits Each One
- Single-cloud AWS shop needing sub-hour RTO: AWS Elastic Disaster Recovery is the default choice. Native integration with EC2, EBS, and IAM means no cross-cloud networking overhead, and the flat per-server fee is easy to forecast.
- Hybrid VMware/Hyper-V estate migrating toward Azure: Azure Site Recovery wins here because it natively understands VMware and Hyper-V replication without third-party agents, and the 31-day free trial lets teams validate the DR plan before committing budget.
- Large fleet of low-change-rate servers or archival systems: Google Cloud Backup and DR’s per-GiB pricing beats per-server models once you are protecting dozens of lightly-modified servers, especially file servers, media libraries, or cold databases.
- True multi-cloud or hybrid environment with ransomware-resilience mandates: Zerto’s journal-based CDP and immutable recovery points, or a Veeam-powered DRaaS provider, justify their premium over native cloud tooling when vendor lock-in itself is the risk being managed.
- Startup or small team testing DR for the first time: Azure Site Recovery’s 31-day free window or Google’s 30-day evaluation period let a small team run a full DR drill end-to-end before any budget commitment, which AWS DRS does not offer since billing starts immediately.
Migration Guide: Moving From One DRaaS Platform to Another
Switching DRaaS providers, or standing up a second one for a multi-cloud strategy, follows a similar sequence regardless of which platforms are involved.
- Inventory source servers and classify by RPO/RTO tier. Not every server needs sub-second replication. Separate tier-1 transactional systems from tier-3 archival or dev/test servers before pricing anything out, since mixing tiers onto one expensive platform wastes budget.
- Run parallel replication during the transition window. Install the new platform’s agent (AWS Replication Agent, ASR Mobility Service, or the Google backup/DR agent) alongside the existing tool rather than cutting over immediately, so you have a rollback path if the new replication stream has issues.
- Validate network bandwidth against the new platform’s replication model. AWS DRS and continuous-CDP tools like Zerto need sustained bandwidth for block-level replication. Google’s backup-centric model is more forgiving of intermittent connections since it operates on scheduled windows rather than continuous streams.
- Run a non-disruptive test failover on the new platform before decommissioning the old one. All three hyperscalers support isolated-network test launches that don’t touch production. Confirm the failed-over instance boots correctly, network routes resolve, and application health checks pass.
- Cut over source-of-truth replication and monitor RPO drift for the first two weeks. Watch for lag between expected and actual recovery points, especially if the new platform’s replication cadence differs from the old one.
- Decommission the old platform’s agents and confirm billing has stopped. Leftover replication agents on decommissioned platforms are a common source of orphaned charges, particularly on AWS DRS where the per-server-hour fee keeps accruing until the source server is explicitly disassociated.
- Update your disaster recovery runbook and re-run the drill schedule. A platform migration is also the right moment to refresh recovery documentation, since step-by-step failover instructions tend to go stale as infrastructure changes underneath them.
Teams managing DR spend alongside broader cloud governance often pair this migration with a review of cost visibility tooling and landing zone guardrails, since DRaaS charges can otherwise slip past standard budget alerts until the monthly invoice lands. It is also worth reviewing how the DR target databases are provisioned in the first place. Teams running managed database services across clouds often find their DR replication costs are driven more by database write volume than by server count.
# Example: check AWS DRS replication status for all source servers (AWS CLI)
aws drs describe-source-servers \
--query "items[].{Server:sourceServerID,State:dataReplicationInfo.dataReplicationState,Lag:dataReplicationInfo.lagDuration}" \
--output table
# Example: check Azure Site Recovery job status for a vault (Azure CLI)
az backup job list \
--resource-group myResourceGroup \
--vault-name myRecoveryVault \
--output table
Pros and Cons of Each Platform
AWS Elastic Disaster Recovery
- Pro: Sub-second RPO via continuous block-level replication, the tightest data-loss window of the three native options
- Pro: Flat per-server pricing is predictable regardless of data volume or drill frequency
- Pro: Test launches and recovery launches carry no extra platform fee beyond compute/storage consumed
- Con: No free trial, billing starts the moment a server begins replicating
- Con: Real total cost (including staging infrastructure) runs closer to $64/server/month than the advertised $20.44
- Con: Best suited to AWS as the recovery target, cross-cloud failover requires more manual orchestration
Azure Site Recovery
- Pro: 31 days free per protected instance, the most generous trial window of the three
- Pro: Native VMware and Hyper-V support without needing third-party replication agents
- Pro: Test failover runs in an isolated network without touching production
- Con: RPO varies significantly by scenario, periodic-replication configurations can drift into hours
- Con: License fee is only a fraction of total cost once replica storage and egress are added
- Con: RTO for VMware/Hyper-V-to-Azure scenarios typically trails AWS DRS’s sub-hour benchmark
Google Cloud Backup and DR
- Pro: No per-server fee, the most cost-efficient option for large fleets of small or low-change servers
- Pro: 30-day evaluation window with no management or vault storage charges
- Pro: Granular per-GiB meters mean you only pay for what you actually protect
- Con: Native RPO/RTO lands in the hours range, well behind AWS DRS and Azure’s faster tiers
- Con: Reaching sub-minute RPO requires layering on Persistent Disk Asynchronous Replication separately
- Con: Per-GiB pricing can get expensive fast for large, high-change database workloads
Compliance and Security Considerations
None of the three hyperscaler DR services publish a separate compliance certification distinct from their parent cloud platform. AWS DRS inherits AWS’s broader SOC 1/2/3, ISO 27001, and HIPAA-eligible status, meaning a HIPAA business associate agreement covering AWS generally extends to DRS usage, though teams should confirm scope directly with AWS. Azure Site Recovery sits under Azure’s compliance umbrella, including HIPAA BAA coverage and FedRAMP authorization in US government regions specifically. Google Cloud Backup and DR falls under Google Cloud’s SOC and ISO certifications, with HIPAA and FedRAMP coverage varying by specific service and region, which is worth double-checking against Google’s service-specific compliance documentation before assuming coverage extends automatically.
For regulated industries, the more practical compliance question is usually less about the DR platform’s own certification and more about data residency during replication. Cross-region and cross-border replication can trigger data sovereignty requirements that a single-region deployment never encounters, so confirming which regions each platform supports for your specific compliance regime should happen before, not after, signing off on an architecture.
The Verdict: Which DRaaS Platform Should You Choose
There is no universal winner here, the right pick depends entirely on where your workloads already live and how tight your RPO requirements are. AWS Elastic Disaster Recovery earns the recommendation for teams already standardized on AWS who need the tightest possible RPO and can tolerate paying from day one with no trial period. Azure Site Recovery is the strongest pick for hybrid VMware and Hyper-V estates, especially given the 31-day free evaluation that lets a team prove out the DR plan before committing real budget. Google Cloud Backup and DR wins decisively on raw cost efficiency for large fleets of low-change servers, but only for teams whose compliance and business requirements can tolerate hours-scale recovery rather than minutes.
For organizations spanning more than one cloud or running a genuinely hybrid on-prem footprint, the math shifts. Zerto and Veeam-powered DRaaS providers cost more per protected workload than any single native option, but they remove the platform-lock-in risk that a native service inherently carries, and for regulated industries that risk often has a bigger dollar value attached than the subscription premium itself. The practical starting point for most teams: model your actual server count and data volume against the pricing tables above before assuming any one platform is automatically cheaper, since the crossover point between AWS’s flat per-server model and Google’s per-GiB model shifts depending on exactly how much data each protected server holds.
Frequently Asked Questions
Is disaster recovery as a service the same thing as backup?
No. Backup restores your data. DRaaS restores your running application, including compute, boot order, and networking, so a full server or environment can come back online in minutes rather than being rebuilt from a restored data set. Google Cloud Backup and DR blurs this line more than AWS DRS or Azure Site Recovery since it is architecturally closer to a backup product that DR patterns get layered on top of.
How much does AWS Elastic Disaster Recovery cost per server?
The platform fee is $0.028 per source server per hour, approximately $20.44 per month, regardless of data volume or number of drills run. Once staging EC2 instances, EBS volumes, and snapshot storage are included, AWS’s own cost-optimization guidance estimates the realistic total closer to $64 per server per month.
Does Azure Site Recovery really offer a free trial?
Yes, but only for the licensing fee. Every newly protected instance gets 31 days without the $16 or $25 per-instance monthly charge. Replica storage, storage transactions, outbound data transfer, and any compute used during failover or test drills bill separately from day one, so the trial reduces but does not eliminate cost during evaluation.
Which platform has the fastest recovery time objective?
AWS Elastic Disaster Recovery generally posts the fastest numbers thanks to continuous block-level replication, with RTO typically under an hour and RPO in the sub-second to seconds range. Azure Site Recovery’s Azure-to-Azure continuous replication scenario comes close, while its VMware and Hyper-V scenarios trail somewhat. Google Cloud Backup and DR alone is the slowest of the three by default, since it is fundamentally backup-oriented, though pairing it with Persistent Disk Asynchronous Replication closes much of that gap for Compute Engine workloads specifically.
Can I use AWS Elastic Disaster Recovery to protect servers running on Google Cloud or Azure?
Yes. AWS DRS supports source servers running on other clouds, not just on-premises or physical hardware, since replication happens through an agent installed at the OS level rather than depending on the source cloud’s own APIs. AWS has published guidance specifically covering building a DR site on AWS for workloads originating on Google Cloud, making cross-cloud DR a supported, if less common, pattern.
Do I still need Zerto or Veeam if I already use a hyperscaler’s native DRaaS?
Only if you have a specific reason to want platform independence, such as regulatory requirements to prove DR does not depend on a single cloud vendor, or a genuinely multi-cloud production footprint. For single-cloud environments, the native option is almost always cheaper and simpler to operate than adding a third-party layer on top.
What is the biggest hidden cost across all three platforms?
Data egress during failover and testing. All three providers advertise low or predictable platform fees, but moving data out of the cloud during a real failover, or repeatedly during frequent test drills, adds standard cloud egress charges that rarely appear in the headline pricing. Teams that run monthly or quarterly DR drills should model egress costs into their annual DR budget rather than treating the platform fee as the full picture.
How often should I test a DRaaS failover?
Most compliance frameworks and industry guidance recommend at minimum quarterly test failovers for production-critical systems, with some regulated industries requiring monthly drills. Since all three platforms support non-disruptive test launches that don’t touch production, the main constraint on drill frequency is usually the egress and compute cost of the test itself rather than any risk to live systems.
