Our organisation intends on migrating many of our servers to azure. I was wondering from a risk and best practices perspective, if there are any best practice guides to follow for ensuring the process goes smoothly, i.e. testing plans etc. Is there anything out there which could be provided so we can provide assurance that the process goes well. Or any specific horror stories of cloud migrations gone bad and the root causes for that (i.e. bad testing/processes for migration). what kinds of risk can organisations face if not properly managing and planning such a migration.