# Serverless ML: FaaS and Lambda Function-as-a-Service (FaaS) and Lambda functions are types of serverless systems. ![An example of a common serverless website configuration. Source: NBS System](/files/-LwQZg_c0lrUCbVR-aET) Going serverless for model serving or inference *sounds* attractive. Theoretically, there would be less infrastructure to manage and less idle GPU/CPU cost. In practice, however, cold-start times and other unavoidable hurdles have slowed widespread adoption. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://machine-learning.paperspace.com/wiki/serverless-ml-faas-and-lamda.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.