Migrating to--or away from--the Public Cloud

When people talk about "cloud migration," they could be referring to either architecture or operations. The first involves migrating legacy applications to a scalable, cloud-ready architecture, often using newer languages such as Google's Go and Apple's Swift and newer components such as NoSQL databases. The second involves migrating either such cloud-ready applications or newly designed and coded applications from a private cloud to the public cloud or vice versa, or among public clouds. There is no single answer, but rather a broad set of considerations, in determining whether to migrate, and if so, with what end state in mind.