AWS Disaster Recovery
DR Architecture That Has Actually Been Tested
We design, implement, and test AWS disaster recovery strategies for agency clients. From RPO and RTO definition through to runbook-driven failover drills, we close the gap between DR on paper and DR in practice.
The Problem With AWS Disaster Recovery Plans That Have Never Been Run
Most AWS environments have a recovery story. It lives in a Confluence page or a slide deck from the original architecture review. It names the AWS services that would be used if something went wrong. It has never been run. The first time it gets tested in earnest is during an actual incident, at a point when the team is already under pressure, when the runbook steps that assumed a particular AMI ID or a specific IAM role name are discovered to be stale, and when the RTO that was agreed in a planning meeting turns out to be aspirational rather than achievable.
AWS disaster recovery done correctly is an operational discipline, not a documentation exercise. It starts with RPO and RTO requirements that are actually defined precisely enough to be tested, continues with an architecture that can meet those requirements, and ends with failover drills that confirm the architecture works as designed before an incident makes the test mandatory. Our NextEnvision engineering team designs and tests AWS disaster recovery environments for agency clients across Australia, the UK, and Singapore, delivered entirely under your brand through our white-label delivery model.
AWS Disaster Recovery Services
Six disciplines that define how we design, implement, and validate AWS disaster recovery for agency client environments.
RPO and RTO Elicitation and Definition
Recovery Point Objective and Recovery Time Objective are the two numbers that determine everything else in an AWS disaster recovery design. Most clients have not formally defined either. “We cannot afford to lose data” is not an RPO. “We need to be back up quickly” is not an RTO. The RPO defines the maximum data loss the business can tolerate expressed in time: if the RPO is four hours, a four-hour-old backup is acceptable after a failure. If the RPO is 15 minutes, the replication mechanism must commit data to a secondary location at least every 15 minutes. The RTO defines how long the business can operate with the system unavailable before the impact becomes unacceptable.
We run structured RPO/RTO workshops that translate business impact statements into measurable targets. The resulting numbers drive the tier selection, the architecture design, and the success criteria for the failover test. The AWS Disaster Recovery Options whitepaper provides the framework we apply against each client’s specific requirements. This connects to the broader approach across our AWS development services.
DR Strategy Selection Across the Four Tiers
AWS disaster recovery architecture sits across four tiers that differ in cost, complexity, and recovery speed. Backup-and-restore uses AWS Backup to store snapshots in a secondary region with recovery times measured in hours. Pilot light keeps a minimal version of the environment running in a secondary region, recovering in 30 minutes or less when non-critical components are scaled up. Warm standby runs a scaled-down version of the full environment continuously, recovering in minutes. Multi-region active-active serves traffic from multiple regions simultaneously with near-zero RTO.
The right tier depends on the specific RPO and RTO requirements, not on which option sounds most impressive. A client with a four-hour RTO spending on warm standby when backup-and-restore would suffice is not buying usable additional capability. We model the cost of each tier against the client’s requirements before recommending one.
AWS-Specific DR Service Configuration
The AWS services that implement each DR tier require specific configuration. Aurora Global Database provides cross-region replication with a typical RPO of under a second; the planned and unplanned failover paths differ and both need to be documented and tested. DynamoDB Global Tables replicate writes across regions with conflict resolution that must be designed around the application’s write patterns. Elastic Disaster Recovery (AWS DRS) continuously replicates server-based workloads and can launch recovery instances within minutes.
Route 53 health check failover routing requires correctly configured endpoints, appropriate failure thresholds, and an understanding of the DNS TTL implications for traffic shift speed. Cross-region S3 replication requires versioning enabled on both source and destination buckets. We configure and test each of these services as part of the DR implementation.
DR Testing: Failover Drills and Chaos Engineering
A DR architecture that has never been tested is a hypothesis. Runbook-driven failover drills execute the documented recovery procedure against a live environment, measure the actual RTO against the target, identify steps that take longer than expected or fail entirely, and produce a test report that either confirms the architecture works or specifies what must change before it does.
AWS Fault Injection Service enables controlled injection of failure conditions including EC2 instance termination, EBS volume detachment, Availability Zone impairment simulation, and network latency injection. We design FIS experiments targeting the specific failure modes the client’s architecture is most exposed to, and run them in staging before production.
Regulatory Compliance: APRA, FCA, and MAS Requirements
Clients operating in regulated industries across Australia, the UK, and Singapore face specific regulatory obligations around disaster recovery. APRA CPS 230 requires Australian regulated entities to test business continuity plans and recover critical operations within defined tolerances. FCA SYSC 8 requires UK firms to maintain adequate business continuity policies through systems interruptions. MAS TRM Guidelines require Singapore financial institutions to conduct annual DR testing and recover critical systems within defined recovery time objectives.
We design AWS disaster recovery architectures that produce the evidence these frameworks require: documented RPO/RTO targets, architecture designs, test records, and runbooks presentable to regulators or auditors. We build the technical layer; we are not providing regulatory advice.
DR Runbook Creation and Operational Handover
A DR runbook documents the exact steps to execute a recovery, who is authorised to initiate each step, what the expected outcome is, and what to do if the step fails. A runbook that says “scale up the warm standby environment” is not useful at 3am. A runbook that specifies the Auto Scaling group name, the target capacity, the health check to confirm, and the monitoring dashboard to verify is one that any on-call engineer can follow without having been involved in designing the environment.
We produce runbooks at this level of specificity, test them during the failover drill, and update them to reflect what the test revealed. Runbooks are delivered alongside the architecture documentation through the white-label engagement.
Why DR Audits Are One of the Most Valuable Services Agencies Can Offer Existing Clients
Most agencies that delivered an AWS environment for a client did not include a formal DR design and testing programme in the original scope. The environment was built, delivered, and went live. The DR conversation was deferred to a future phase that may never have happened. The client now has a production AWS environment with a recovery story that has never been tested and may not meet the business requirements even on paper.
A DR audit addresses this directly. It reviews the existing environment against the client’s actual RPO and RTO requirements, identifies the gaps, and produces either a remediation plan or a confirmed DR capability. For an agency it is a concrete deliverable demonstrating ongoing value without requiring a new project to be sold. We run these audits through the NextEnvision Agency Partner Program, delivered under your brand. Our case studies include examples of findings these audits typically surface.
Technical Capabilities Across AWS Disaster Recovery
Four engineering disciplines that determine whether an AWS DR strategy works when it is actually needed.
Cross-region replication architecture
Cross-region replication in an AWS disaster recovery design is a set of service-specific configurations that need to be implemented and tested independently for each service in the application stack. RDS automated backups can be copied to a secondary region. Aurora Global Database replicates at the storage layer across up to five secondary regions. DynamoDB Global Tables provide multi-region active replication with eventual consistency. S3 cross-region replication copies objects asynchronously with a typical time under 15 minutes for objects under 1GB. Each has different RPO implications that need to be modelled against the specific requirement before selection.
TTD and TTR metric design
Time to Detect and Time to Recover translate DR architecture into observable outcomes. TTD measures how long from a failure occurring to the on-call team becoming aware. CloudWatch alarms, Route 53 health check state changes, and Elastic Disaster Recovery alerts all contribute to TTD. If TTD is 20 minutes, the RTO clock does not start until 20 minutes after the failure. TTR measures time from detection to recovery. We design the alarm and alerting configuration to minimise TTD independently from the architecture decisions affecting TTR, because both contribute to the total outage duration the client experiences.
GameDay and tabletop exercise facilitation
A GameDay is a structured exercise in which the team executes a simulated failure scenario and measures the response against the documented runbook. We design and facilitate GameDay exercises covering the failure scenarios most relevant to each client’s architecture: primary region outage, database primary failure, critical service unavailability, and data corruption requiring point-in-time recovery. Output is a test report with actual TTD and TTR measurements, identified runbook gaps, and a prioritised remediation list for anything that did not perform as expected.
DR documentation for audit and compliance
Regulatory auditors and compliance teams require specific evidence formats to verify that an AWS disaster recovery capability meets their requirements. Test records need dates, the scope tested, the RPO and RTO targets, actual results, and sign-off from an authorised person. Runbooks need to demonstrate that recovery can be executed by an engineer who was not involved in building the environment. We produce documentation that satisfies these requirements across the APRA, FCA, and MAS regulatory contexts we operate in.
AWS Disaster Recovery Delivered Under Your Agency Brand
We design, implement, and test AWS disaster recovery environments under your agency brand. Your client receives the RPO/RTO workshop output, the architecture documentation, the runbooks, the test reports, and the compliance evidence as deliverables from your team. We are not visible in the engagement. This matters for DR work in particular because the client relationship during a real incident depends on trusting the team that built the recovery architecture, and that team is yours.
The DR deliverables are designed to be maintainable by the client’s own team after the engagement ends: runbooks in plain language with no assumed knowledge of the original design decisions, architecture diagrams annotated with the failover sequence, and test records in a format that can be presented to auditors without our involvement. Learn more about the engagement structure at our white-label development page.
We support agencies in Australia, the UK, and Singapore. AWS disaster recovery engagements range from a single DR audit on an existing environment to a full DR design, implementation, and testing programme for a new or significantly changed architecture.
Reach us through the Agency Partner Program or directly via our contact page.
Why Most AWS Disaster Recovery Plans Fail When Actually Needed
The first failure pattern is stale runbooks. An AWS disaster recovery runbook that references an AMI ID replaced six months ago, a security group name changed during a compliance remediation, or an IAM role deleted when the team restructured will not execute correctly. Runbooks written once and never validated against the current environment are historical documentation, not recovery documentation. The only way to know whether a runbook reflects the current environment is to run it. Most teams discover it does not during an actual incident.
The second failure pattern is an RTO defined without understanding what the recovery steps actually take. A warm standby architecture with a documented RTO of 15 minutes is only achievable if scaling, application initialisation, database replication catch-up, and Route 53 DNS propagation together complete in 15 minutes. If they take 40 minutes, the RTO is 40 minutes regardless of the document. We build the RTO target from measured step times during the test, not from estimates during the design.
How Agencies Engage Us for AWS Disaster Recovery Work
Four engagement structures matched to where agencies need DR capability across their client portfolio.
DR audit on existing environments
A fixed-scope audit of an existing AWS environment against defined or elicited RPO and RTO requirements. The audit maps the current architecture against each requirement, identifies the gaps, estimates remediation cost, and produces a prioritised recommendation report. No changes are made during the audit phase. Output is delivered under the agency brand within two to three weeks. This is the most common entry point for agencies adding DR value to existing client relationships.
DR design and implementation programme
End-to-end AWS disaster recovery design and implementation for a client environment that does not currently have a tested DR capability. Covers RPO/RTO elicitation, tier selection, architecture design, AWS service configuration (Aurora Global, DynamoDB Global Tables, Route 53 health checks, AWS Backup cross-region, DRS where applicable), runbook creation, and a failover drill that validates the design before handover. The engagement ends with a test report and a DR capability your client can point to with confidence.
Annual DR testing retainer
An ongoing engagement covering the annual failover drill, runbook review and update, TTD and TTR metric review, and regulatory evidence production for clients with APRA, FCA, or MAS compliance obligations. DR environments drift as the production environment changes. Annual testing catches the drift before a regulator does. Structured as a fixed annual fee with a defined testing scope agreed at the start of each year.
Incident response and recovery support
On-call support during an actual AWS recovery event for clients who have a DR architecture in place but need experienced engineers available during execution. We join the incident response channel, follow the runbook, escalate where the runbook does not cover the specific scenario, and document the actual recovery process for the post-incident review. Available to agencies whose clients are in regulated industries where the DR process needs to be witnessed and documented by experienced practitioners. Begin with a discovery call to discuss how this fits your client situation.
How We Deliver AWS Disaster Recovery Engagements
A six-phase process that moves from business requirements to a tested, documented DR capability.
RPO/RTO workshop and business impact analysis
We work with the client to define the RPO and RTO for each system in scope, translating business impact statements into measurable targets using structured workshops. Which systems are critical? What is the financial and operational impact of each hour of downtime? What is the maximum tolerable data loss? These questions produce the numbers that drive every subsequent design decision. The workshop output is a requirements document signed off by the client before architecture work begins.
Current state assessment and gap analysis
For existing environments, we map the current architecture against the defined requirements. The gap analysis identifies which systems have no DR capability, which have an untested design, and which have a tested capability that meets the requirements. For new environments, this phase reviews the proposed architecture against the DR requirements before implementation begins. In both cases the output is a prioritised list of DR work ordered by business impact and implementation cost.
DR architecture design and tier selection
Each system in scope is assigned a DR tier based on its RPO and RTO requirements and the cost-benefit analysis at that requirement level. The architecture design specifies the exact AWS services and configurations: Aurora Global Database for database replication, Route 53 health check settings for traffic failover, AWS Backup policy for cross-region snapshots, and DRS replication settings for server workloads. The design is reviewed and approved before implementation begins.
Implementation and replication validation
DR infrastructure is implemented using infrastructure as code and validated against the design specification. Replication mechanisms are confirmed to be active within the expected RPO window before the failover test is scheduled. Aurora Global Database replication lag is monitored. DynamoDB Global Table replication is confirmed. S3 cross-region replication rules are verified against the object prefixes that matter for recovery. Route 53 health checks are confirmed against the correct endpoints with appropriate thresholds.
Failover drill and runbook validation
The failover drill executes the documented runbook against a live environment, measures actual TTD and TTR against targets, and records the outcome of each runbook step. Steps that fail or exceed their time budget are root-caused and the architecture or runbook is updated. The drill is repeated until the environment meets the RPO and RTO targets consistently. The test report documents the methodology, the results, and the sign-off from the responsible party.
DR documentation package and handover
The engagement closes with a documentation package: the RPO/RTO requirements document, the architecture design with failover sequence annotations, the complete runbook library, the test report with measured TTD and TTR results, the replication monitoring configuration, and a schedule for the next test. The documentation is formatted for the client’s internal requirements and for any regulatory reporting obligations they carry. For the broader engineering context around what sits inside the environments we protect, see our AWS development services overview.