# Function as a Service (FaaS)

Function as a Service (FaaS) is the compute layer of a serverless architecture, used to connect services, transform data, and implement business logic.

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## Meta's serverless platform processes trillions of function calls a day

DevFeed: [Meta's serverless platform processes trillions of function calls a day](<https://devfeed.tech/articles/meta-s-serverless-platform-processes-trillions-of-function-calls-a-day-39093.md>)

Original publisher: [Read original article](<https://read.engineerscodex.com/p/meta-xfaas-serverless-functions-explained>)

Author: Engineer's Codex

Published: 2023-10-22T17:32:27Z

Content type: article

Language: en

Sources: [Engineer's Codex](<https://devfeed.tech/sources/engineer-s-codex.md>)

Topics: [Meta](<https://devfeed.tech/topics/meta.md>), [Function as a Service (FaaS)](<https://devfeed.tech/topics/function-as-a-service-faas.md>), [AWS Lambda](<https://devfeed.tech/topics/aws-lambda.md>), [Google Cloud Platform (GCP)](<https://devfeed.tech/topics/google-cloud.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>), [benchmarking](<https://devfeed.tech/topics/benchmarking.md>)

Tags: [aws](<https://devfeed.tech/tags/aws.md>), [aws-lambda](<https://devfeed.tech/tags/aws-lambda.md>), [azure](<https://devfeed.tech/tags/azure.md>), [azure-functions](<https://devfeed.tech/tags/azure-functions.md>), [cloud-functions](<https://devfeed.tech/tags/cloud-functions.md>), [faas](<https://devfeed.tech/tags/faas.md>), [function-as-a-service-faas](<https://devfeed.tech/tags/function-as-a-service-faas.md>), [meta](<https://devfeed.tech/tags/meta.md>), [performance](<https://devfeed.tech/tags/performance.md>), [serverless](<https://devfeed.tech/tags/serverless.md>)

### AI overview

This article summarizes and explains Meta's XFaaS, a private serverless platform for non-user-facing functions. It describes how XFaaS reduces startup overhead, predicts spiky workloads, and spreads work across time and datacenters to improve hardware utilization and manage cost.

### Source excerpt

XFaaS is Meta's private platform for "Hyperscale and Low Cost Serverless Functions." It is more efficient than AWS Lambda, Azure Functions, and Google Cloud Functions.