loose coupling to surrounding services to have more flexibility in the actual move of applications. Containerize your applications to have them more portable. Switch your test data as much as possible to synthetic data to have less legal and security hurdles. Standardize and automated your testing approach to have better verification possibilities. Beside that automated QA will be one of the major drivers in your business case.
In this document I describe one possible approach to scale the knowledge around a new technology into the organisation. I will show a way which is flexible enough to meet the personal needs. But which is managed enough to not leave people alone. And shield your staff from the daily business but on the other side avoid an impact to it.