Migration is a process that is assisted by Amazon when you are planning to migrate to AWS Cloud Platform. The strategy and the planning is to be done by the company itself. They need to figure out as what are the services they want to migrate to the cloud and what not.
AWS will only provide you with a method of Implementing it. There are many services provided by AWS for easing the process of Migration.
The major ones are as follows:-
- AWS Migration Hub
- AWS Server Migartion Service
- AWS S3 Transfer Acceleration
- AWS Snowball
For all the other services you can refer this article on Services For AWS Migration.
Hope this helps.