AWS Architecture Blog

Tag: Disaster recovery

The Pilot Light scenario for a 3-tier application that has application servers and a database deployed in two Regions

How an insurance company implements disaster recovery of 3-tier applications

A good strategy for resilience will include operating with high availability and planning for business continuity. It also accounts for the incidence of natural disasters, such as earthquakes or floods and technical failures, such as power failure or network connectivity. AWS recommends a multi-AZ strategy for high availability and a multi-Region strategy for disaster recovery. […]

When the application experiences an impairment using S3 resources in the primary Region, it fails over to use an S3 bucket in the secondary Region.

Creating an organizational multi-Region failover strategy

AWS Regions provide fault isolation boundaries that prevent correlated failure and contain the impact from AWS service impairments to a single Region when they occur. You can use these fault boundaries to build multi-Region applications that consist of independent, fault-isolated replicas in each Region that limit shared fate scenarios. This allows you to build multi-Region […]

Warm standby with managed services

Disaster Recovery Solutions with AWS managed services, Part 3: Multi-Site Active/Passive

Welcome to the third post of a multi-part series that addresses disaster recovery (DR) strategies with the use of AWS-managed services to align with customer requirements of performance, cost, and compliance. In part two of this series, we introduced a DR concept that utilizes managed services through a backup and restore strategy with multiple Regions. […]

Resilience patterns and trade-offs

Understand resiliency patterns and trade-offs to architect efficiently in the cloud

This post was originally published in June 2022 and is now updated with more information on efficiently architecting resilient patterns in the cloud. Architecting workloads for resilience on the cloud often need to evaluate multiple factors before they can decide the most optimal architecture for their workloads. Example Corp has multiple applications with varying criticality, […]

Multi-Region backup

Disaster recovery with AWS managed services, Part 2: Multi-Region/backup and restore

In part 1 of this series, we introduced a disaster recovery (DR) concept that uses managed services through a single AWS Region strategy. In part two, we introduce a multi-Region backup and restore approach. With this approach, you can deploy a DR solution in multiple Regions, but it will be associated with longer RPO/RTO. Using a […]

Figure 2. Simulating Regional failover using service control policies

Minimizing Dependencies in a Disaster Recovery Plan

The Availability and Beyond whitepaper discusses the concept of static stability for improving resilience. What does static stability mean with regard to a multi-Region disaster recovery (DR) plan? What if the very tools that we rely on for failover are themselves impacted by a DR event? In this post, you’ll learn how to reduce dependencies […]

Building an application with AWS multi-Region services using services covered in Part 1

Creating a Multi-Region Application with AWS Services – Part 2, Data and Replication

Data is at the center of stateful applications. Data consistency models will vary when choosing in-Region vs. multi-Region. In this post, part 2 of 3, we continue to filter through AWS services to focus on data-centric services with native features to help get your data where it needs to be in support of a multi-Region […]

Multi-Region security, identity, and compliance services

Creating a Multi-Region Application with AWS Services – Part 1, Compute, Networking, and Security

Many AWS services have features to help you build and manage a multi-Region architecture, but identifying those capabilities across 200+ services can be overwhelming. In this 3-part blog series, we filter through those 200+ services and focus on those that have specific features to assist you in building multi-Region applications. In Part 1, we’ll build […]

Single Region/multi-AZ with secondary Region for backups

Disaster Recovery with AWS managed services, Part 1: Single Region

This 3-part blog series discusses disaster recovery (DR) strategies that you can implement to ensure your data is safe and that your workload stays available during a disaster. In Part I, we’ll discuss the single AWS Region/multi-Availability Zone (AZ) DR strategy. The strategy outlined in this blog post addresses how to integrate AWS managed services […]