I found another post from about a year back where this advice was given:
Our infrastructure planning is mostly integrated with our project planning processes. I have included some high-level thoughts below on what works well for us but the client's size will probably dictate the best solution.
-We have every infrastructure team engaged for each project request to assess LOE and infrastructure resources required.
-We approve projects annually and quarterly to allow for sufficient time to plan and continue to work on existing systems
-We plan for infrastructure sizing and costs in a 5-year model for each new item brought into our system
-Upon project completion we have a hand-off to support to ensure the operational/KTLO teams are equipped to support
-Every year, each infrastructure team does an assessment within a standard PRJ to capture the refresh needs of aging systems
-We do not allow for servers or any infrastructure items with a cost to be added to the system without a formal PRJ# and governance review
I will note we still do not have a perfect process but happy to try to answer any specific questions they may have.
