This is one of several papers I’ll be reading from 2023’s Symposium on Operating Systems Principles (SOSP). Enjoy! “XFaaS: Hyperscale and Low Cost Serverless Functions at Meta” Background Function-as-a-Service systems (a.k.a. FaaS) allow engineers to run code without setting aside servers to a specific function. Instead, users of FaaS systems run their code on generalized infrastructure (like AWS Lambda, Azure Functions, and GCP’s Cloud Functions), and only pay for the time that they use. Key Ta...