Understanding migration scenarios
Cloud migration is the process of moving applications, data, and the supporting IT infrastructure from on-premises (or an outsourced managed data center) to a cloud platform. Cloud migration provides organizations with greater flexibility, scalability, and, potentially, cost savings while allowing them to keep up with the ever-evolving cloud technology landscape. It also enables organizations to focus more on innovation than on IT procurement and management as cloud services are managed by the cloud provider.
In Chapter 3, we described the need to thoroughly assess your digital estate and determine the best migration path for each workload. Remember the five Rs of rationalization: rehost, refactor, rearchitect, rebuild, and replace. These five Rs are the most common options, though it is likely that when one pictures migration in their mind, it would be along the lines of a lift and shift (that is, rehosting). Lifting and shifting existing applications...