You have spent 60 hours on a save file. Then the console breaks, or you cancel a subscription to save a few euros, and a worry creeps in: is my progress still there? The answer depends on where your save lives and who is allowed to keep it for you.
When you play, the game writes a save file to the storage inside your console or PC. That is the local copy. It is fast and it stays there whether or not you pay anyone.
A cloud save is a second copy kept on a company's servers. It is your insurance: if the console is stolen, broken or replaced, you sign in on the new one and download the save. Without a cloud copy, a dead console can mean a dead save.
So the real question is not "do cloud saves exist?" but "who gives me one, and what does it cost to keep it?" That differs by platform.
Rules change, so treat this as the general picture and check the platform's own support page before you rely on it.
Xbox cloud saves are not locked behind a paid subscription, and Steam Cloud is free too. The catch on PC is that each game must opt in: a developer decides whether its game uses Steam Cloud at all.
PlayStation keeps saves in cloud storage as a PlayStation Plus feature, with a generous limit (100 GB for PS5 saves). Without an active membership you lose access to the cloud copy. The copy on your console stays, so you can keep playing there.
Switch cloud backups need an active Nintendo Switch Online membership, and not every game supports them. If the membership ends, you lose access to the backups, but Nintendo says you can get them back if you rejoin within 180 days. After that window Nintendo does not promise anything. The Switch also does not let you copy saves to a memory card as a back-up.
Try Xbox or PC first: nothing you do with money changes the outcome, because the cloud copy is not tied to a plan. Then switch to PlayStation and slide the months up. The cloud copy locks the moment the membership lapses, which is fine while your console works but painful if it breaks.
Now pick Switch. It is the only one with a clock: in the first six months the backup is locked but recoverable, and after that it is no longer guaranteed.
Check before you cancel. Cancelling a subscription is normal. Just open your game's save menu first and make sure the latest progress has uploaded.
Do not cancel and then break things. The danger is the combination: no active plan and a console that stops working. Keep the plan active while you are in the middle of a long game you cannot replay.
Know which games opt out. Some Switch games do not support backups at all, and PC games must opt in to Steam Cloud. Look at the game's store page or the platform's support article rather than assuming.
If you are comparing subscriptions, add this to the list: a plan can include games, online play and a storage space for your saves. If saves are the only thing you need, check whether the platform gives them away, as Xbox and Steam do, or charges for them, as PlayStation and Switch do. Either way, the money you spend should be a choice, not a surprise at the moment your console dies.