From the official doc I understood that FCM is free, but for Cloud Functions, free usage on the Blaze plan is calculated at the billing account level, not the project level and has the following limits:
2M invocations/month
400K GB-seconds/month
200K CPU-seconds/month
5 GB of networking egress/month
We are creating an application which is depending on the cloud messaging and expecting 1000K app installation and the limit may exceed within the month. Can any one please describe what happens if 2M invocations/month ? Can I get paid dedicated FCM service? If yes how can I purchase such plan?