Serverless is an increasingly popular branch of cloud computing that can help organizations optimize their cloud costs and application delivery needs.
Serverless, also referred to as Functions-as-a-Service, or event driven computing, is different than either virtual machine or regular container-based cloud computing options. With serverless, there is no need to have a long running server instance for compute or container. Rather with the serverless approach, whenever there is an event trigger, a function executes.