What is Serverless Architecture?

Serverless architecture is a design pattern where applications depend on third-party services (known as Backend as a Service or "BaaS") or on custom code run in ephemeral containers (Function as a Service or "FaaS"). Serverless architectures are application designs that incorporate third-party "Backend as a Service" (BaaS) services and that include custom code run in managed, ephemeral containers on a "Functions as a Service" (FaaS) platform.

The term "serverless" might be a bit misleading as it does not mean that servers are not involved. Instead, it signifies that the developers or operators do not have to actively manage and provision the servers. The responsibility of server management lies with the cloud service provider.