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Warning: with this strategy, it's very important that users that have access to the AWS version of TIS while it's still running in Azure should NOT be allowed to modify data. This would cause a disjunct of what the correct data is. So only only Azure has been decommissioned, should users be able to change data in AWS
We also have data stored in on attachable disks in Azure (Jenkins/Mongo/Rabbit). Some thought will need to be had around the type of data these systems hold and whether or not its required to migrate them.
Developers and Services
During the migration, we’re not going to stop developers from doing their jobs. It won’t be feasible to tell the business that all features/bug fixes will need to stop until we’ve completed the migration. With this in mind, we are having to come up with ways to allow the building/deployments of services to continue with zero impact.
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