The cloud can save you money or quietly drain it. The difference is almost always planning, not luck.
Where cloud bills leak
Most surprise bills come from the same few places. Servers that are bigger than they need to be. Resources left running when no one is using them. Old storage that nobody remembers to delete. None of it is dramatic. It just adds up month after month.
Move in three steps
Right-size from day one
It is tempting to pick the biggest option so you never run out. That is also how bills balloon. Start with what you need today, then scale up when the demand is real. The cloud makes that easy, which is the whole point.