Quote from an article I saw earlier here
With the right team, it can be migrated incrementally but immediately given a welcoming platform like Oracle.
Day 1 - give a voice to a handful of personalities that can spread the news.
In the following days, work out an identity solution initially without posting capabilities. Thereafter, introduce the distributed NoSQL storage for user postings.
AWS in many ways is built upon open source technologies it didn’t create — software that is readily available to everyone such as microservices, load balancing, searching services, relational and non-relation databases, etc.