Today is end of support for SQL Server 2012. May it rest in peace.
Migrating a SQL Server can be a lot of work. There are so many things to think about. It’s a pain.
It is a pain but Lee does have a few tips on how to get started with a migration plan. And as you get closer to present-day SQL Server (remember: there were 4 versions of SQL Server released after 2012 and we’re getting another one this year), being able to set up distributed Availability Groups for version migration can make life a lot easier for you.