Perform minor/major version upgrades for Amazon Aurora MySQL Global Database with minimum downtime

In this post, we show how you can use the blue/green deployment technique to perform engine version upgrades for Aurora MySQL global database clusters with minimal downtime. The approach described in this post enables you to keep your global cluster topology intact and retain access to global capabilities throughout the process. Although this post focuses on version upgrades, you can use a similar approach for other types of database maintenance or change management.