Cloud Functions is an event-driven serverless compute platform . Cloud Functions allows you to write your code without worrying about provisioning resources or scaling to handle changing requirements.
Read moreAre Cloud Functions free in Firebase?
Cloud Functions is available on all Firebase pricing plans, including our free tier . The free tier allows you to quickly experiment and try out integration with other Firebase products. For our Blaze plan, you only pay for what you use. Blaze customers also receive a monthly allotment of free usage for Cloud Functions.
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