Not ELI5 but see https://github.com/cncf/wg-serverless/tree/master/whitepapers/serverless-overview https://github.com/cncf/wg-serverless/tree/master/whitepaper.

Not ELI5 but see https://github.com/cncf/wg-serverless/tree/master/whitepapers/serverless-overview https://github.com/cncf/wg-serverless/tree/master/whitepaper... Some people go monolithic app but best practice is usually one function per route. Traditional servers come with management overhead (e.g. defining/managing/monitoring scaling) and by using Serverless servers you avoid that overhead and optimize for good engineers which are almost always your bigger cost center.