# ADVREL05-BP01 Perform routine evaluation of your workload's fault tolerance capabilities
Resiliency evaluations should not be considered a one-time effort, but a continuous part of any workload's lifecycle.
## Implementation guidance
Your workload, as well as the environment (both regulatory and partner) in which it operates, is constantly changing. Make resilience a regular part of your feature delivery and operational cadence throughout a workload's lifetime. Create a living document to track evolving processes, expectations, and improvements. Use AWS Gamedays, Well-Architected Framework Reviews, and Support Countdown engagements to improve reliability of advertising workloads. Coordinate with your various advertising partners and stakeholders to perform successful failover testing.
## Key AWS services
+ [AWS Well-Architected Tool](https://aws.amazon.com/well-architected-tool/)
+ [Fault Tolerance Analyzer Tool](https://github.com/aws-samples/fault-tolerance-analyser) is an open-source tool that focuses specifically on identifying potential fault tolerance issues across different AWS services
+ [AWS Gamedays](https://aws.amazon.com/gameday/)
+ [Support Countdowns](https://aws.amazon.com/premiumsupport/aws-countdown/)
## Resources
+ [AWS Countdown](https://aws.amazon.com/premiumsupport/aws-countdown/)
+ [Build Your Own Game Day to Support Operational Resilience](https://aws.amazon.com/blogs/architecture/build-your-own-game-day-to-support-operational-resilience/)
+ [Best practices for handling EC2 Spot Instance interruptions](https://aws.amazon.com/blogs/compute/best-practices-for-handling-ec2-spot-instance-interruptions/index.html)
+ [Using the Fault Tolerance Analyzer Tool to Identify Potential Issues](https://aws.amazon.com/blogs/mt/using-the-fault-tolerance-analyser-tool-to-identify-potential-issues/index.html)