When you bring in a new technology or capacity to on-premise, you would want to maximize the bang for the buck which means that you want to review your roadmaps

When you bring in a new technology or capacity to on-premise, you would want to maximize the bang for the buck which means that you want to review your roadmaps to see who else could benefit from the new technology or capaciy. For Cloud services, this is not really required. Also, there is a level of trust with the Big Three meaning that we can trust that they will be able to manage SQL,Cassandra etc with ease; this IT departmens do not have the manpower bandwidth to keep on adding new servers or services. Hence some of reveiws are not really required.