Читать книгу The Official (ISC)2 CCSP CBK Reference - Leslie Fife, Aaron Kraus - Страница 90

One-time movement is when a customer moves to a cloud platform, with no intention of moving it again. This is not common. In a modern environment, movement to and from the cloud as well as between cloud services and CSPs is much more common. These movements are not simply a forklift operation where you pick up some on-premises solution and data and drop it into a cloud account. Each CSP uses different tools and templates. So, a move from one CSP to another requires mapping to the other with the associated data cleanup. Moving from your own infrastructure to a CSP has the same challenge.

Frequent movement between CSPs and between a CSP and your own infrastructure is significantly more difficult, and data can be lost or modified in the process, violating availability and integrity rules. Portability means that the movement between environments is possible. Portable movement will move services and data seamlessly and may be automated.

The movement of data between software products is not a new issue. It can be complicated in the cloud by the need to continue paying for the old service while porting to the new one. This puts time pressure on the porting.