Cloud agility is only valuable when spending stays predictable. The teams that manage cost well treat optimisation as an ongoing operating habit, not a one-off clean-up exercise.
Start with visibility: tag resources consistently, review unused capacity and align every major workload to an owner who understands the business value it supports.
From there, rightsizing, reserved capacity and disciplined environment management can reduce waste without slowing delivery. The goal is not to restrict innovation — it is to make sure every pound spent in the cloud earns its place.