Do cloud functions cost money?

Cloud Functions includes a perpetual free tier for invocations to allow you to experiment with the platform at no charge . Note that even for free tier usage, we require a valid billing account. Cloud Functions uses Cloud Build to convert your function source code into an executable image.

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Which server does Firebase use?

Firebase includes an easy-to-use hosting service for all of your static files. It serves them from a global CDN with HTTP/2 . And to make your development particularly painless, Firebase hosting utilizes Superstatic, which you can run locally for all of your testing.24 Eki 2016

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