Serverless is essentially functions-as-a-service. It allows a development team to upload its application code without worrying a bit about provisioning and patching servers or containers, managing scaling, or redundancy. Pricewise, it’s often a win because you only pay for an actual code execution, not idle servers. It’s a continuation of the evolution we’ve seen in IT over the past decades from bare-metal servers to virtual machines, and then containers.
Amazon was first to the punch with its well-received offering of AWS Lambda in 2014, and Microsoft and Google have followed suit with Azure Functions and Google Cloud Functions in 2016.
