Best approach to migrate 3 tier angular java and db2 to AWS server less architecture

Hello, We are looking for migrating existing 3 tier angular java and db2 application into server less AWS architecture. What are the best practices we should consider? Any reference or pointers for documentation would help.

This is what we are thinking as part of POCs to start with,

1. POC 1 - Migration of DB2 to Aurora (Not sure, which one we should go with, Aurora provisioned or server less)
2. POC 2 - Angular - AWS s3 Java - Lambda and API gateway DB2 - Aurora

Thanks in advance.