Serverless Is More: From PaaS to Present Cloud Computing

In the late 1950s, leasing time on an IBM 704 cost hundreds of dollars per minute. Today, cloud computing-using IT as a service, on demand with pay-per-use-is a widely used computing paradigm that offers large economies of scale. Born from a need to make platform as a service (PaaS) more accessible, fine-grained, and affordable, serverless computing has garnered interest from both industry and academia. This article aims to give an understanding of these early days of serverless computing: what it is, where it comes from, what the current status of serverless technology is, and what its main obstacles and opportunities are.