You should use Cloud Functions for Firebase if you’re a developer building a mobile app or mobile web app . Firebase gives mobile developers access to a complete range of fully managed mobile-centric services including analytics, authentication and Realtime Database.
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Cloud Functions for Firebase does have a free tier for usage up to a certain point , as outlined on our pricing page. However, because Cloud Functions uses some aspects of Google Cloud’s paid infrastructure, we need to enable billing to use Cloud Functions.14 Ara 2020
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