Hello @Rishab, migration is a big decision for a company or organization as entire architecture would change after migration. The changes are good as everything after migration will be take care by AWS. The 6 R's is a strategy for migration.
The 6 R's are as follows:-
- Rehost
- Replatform
- Repurchase
- Refactor
- Retire
- Retain
You can find a detailed role of each of the R's here in this blog about "AWS MIgration"