You’re always locked into your infrastructure. Out of all of the business risks that most companies face, the least is being locked into your cloud provider.

Your CTO is no more going to risk an infrastructure migration because you pinky promised that it would be “seamless” than your DBA is going to migrate from your seven figure Oracle installation to Postgres because you used the “Repository Pattern to abstract your database access”.

And yet, I know many people that are chomping at the bit to migrate away from Oracle and just as many more that have successfully migrated away. Infrastructure cost can be a significant cost of your business depending on what you do.