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Adopting Multi-Region Architecture to Support ADP’s High Availability Requirements

AWS Partner Network Blog

This article discusses how ADP adopted a multi-region, active-active architecture on AWS to meet the high availability requirements of their ADP Voice of Employee application.

Specifically, the article covers:

  • An overview of the solution, including the requirements for security, availability, resilience, scalability, and performance
  • The active-active architecture using AWS services like API Gateway, Lambda, Route 53, and Aurora Global Database
  • The database failover process to the secondary region using Aurora Global Database and re-promotion of the primary region
  • The planned switchover process to revert to the original primary region
  • Recommendations for automation, runbooks, infrastructure as code, and chaos engineering
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