There's no incompatible changes that AWS does that could lock you in. They're just changing the vendor strings, and for older builds back-porting fixes that are

There's no incompatible changes that AWS does that could lock you in. They're just changing the vendor strings, and for older builds back-porting fixes that are important to them. The only major difference is Corretto enables an alternative GC, Shenandoah, which was originally implemented by RedHat. This has been mainlined for a long time now, but Oracle does not ship it. It is available in the Azul and RedHat builds as well.