The chart below depicts the number of applications migrated over time in blue, and the degree of difficulty of moving those applications in orange. This is a fictional collection of applications; however, the concept that difficulty increases the more you migrate affects enterprises large and small as they move to the public cloud.
See this chart:
What’s occurring is easy to explain, but the solution to the problem is not.
Simply put, the applications and databases that are more modern, better designed, and built to be portable are the first to relocate to the clouds. This for good reason: