Calculations from me and others have proven that cloud providers use 5-10x multipliers when selling you things. The less you use them, the better is your bottom line. At the beginning it maybe makes sense to use cloud credits to get you moving, but when credits expire or your organization grows, it is wise to invest in people that can setup things on their own. The biggest lie that cloud providers managed to sell to the world, that you don't need knowledgeable people to run things in cloud.