> Shortly afterwards, Hitler reneged on his solemn promises to respect the integrity of Czechoslovakia
> Today, the Munich Agreement is widely regarded as a failed act of appeasement, and the term has become "a byword for the futility of appeasing expansionist totalitarian states".
Giving in to the demands of the aggressor may "stop" the war for the time being, yes. It doesn't actually solve the problem.
If you really get into it, there's an argument that it bought valuable time; that maybe it was only ever supposed to be a delay, but I think that might be giving too much credit - a positive sure, just perhaps not the intention: Chamberlain returned to London declaring 'peace for our time'.
To whom? To Hitler? Because the Allies didn’t prepare for what was coming.
https://en.wikipedia.org/wiki/Munich_Agreement