Are Google Cloud Functions protected from DDoS attacks?

Question

As far as I understand, my Google Cloud Functions are globally accessible. If I want to control access to them, I need to implement authorization as a part of the function i

Answer 1

from reading the docs at https://cloud.google.com/functions/quotas and https://cloud.google.com/functions/pricing it doesn't seem that there's any abuse protection for HTTP functions. you should distinguish between a DDoS attack that will make Google's servers unresponsive and an abuse that some attacker knows the URL of your HTTP function and invokes it millions of times, which in the latter case is only about how much you pay.