Enhance Your AWS Availability: ARC Zonal Autoshift Practice Now Offers On-Demand Runs and Balanced Capacity Pre-Checks
Amazon Web Services (AWS) is continuously committed to providing customers with robust tools to improve the resilience and availability of their applications. We are pleased to announce an important enhancement to the AWS Resilience Hub’s ARC (AWS Resilience Hub) Zonal Autoshift feature: the introduction of on-demand practice runs and balanced capacity pre-checks. This update, published on June 30, 2025, empowers you with greater control and confidence in preparing for and executing zonal shifts.
Previously, practice runs for Zonal Autoshift were scheduled. While beneficial for planned testing, this could sometimes limit immediate validation opportunities. The new on-demand practice run capability addresses this by allowing you to initiate a practice zonal shift whenever you deem it necessary. This means you can respond to emerging operational insights or proactively test your application’s resilience against a simulated zonal disruption at a time that best suits your operational cadence. Whether it’s a response to a specific event or a regular part of your resilience testing routine, you now have the flexibility to execute practice runs on your own schedule.
Complementing this increased flexibility is the introduction of balanced capacity pre-checks. This significant advancement ensures that before a practice zonal shift is initiated, AWS Resilience Hub performs a thorough evaluation of your application’s capacity across Availability Zones. The pre-check verifies that your application has sufficient capacity in the target Availability Zone to handle the shifted workload without degradation of performance or availability. This proactive measure significantly reduces the risk of encountering capacity-related issues during a practice run, providing a more realistic and reliable simulation of a real-world zonal event.
Together, these new features offer a more comprehensive and user-friendly experience for leveraging Zonal Autoshift. By enabling on-demand practice runs, AWS provides you with the agility to test your resilience strategy when it matters most. Simultaneously, the balanced capacity pre-checks offer an invaluable layer of assurance, confirming that your application is adequately provisioned to withstand a zonal shift.
This enhancement to ARC Zonal Autoshift is a testament to AWS’s ongoing dedication to helping customers build and maintain highly available and resilient applications on the AWS Cloud. We encourage you to explore these new capabilities within AWS Resilience Hub to further strengthen your operational readiness and ensure the continued availability of your critical workloads.
ARC zonal autoshift practice now supports on-demand runs and balanced capacity pre-checks
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