Lately, the popularity and adoption of serverless computing or Function-as-a-Service have been grown substantially, and it emerges as a better way to manage cost, reliability, availability, and scalability. This paper presents a detail of serverless offerings from leading cloud providers such as AWS, Azure, Google Cloud Platform and some open source. It compares them side by side in the relevant category like compute, storage, database, messaging, API management, and tooling. Also provides comparative analysis on available serverless architectures for the most common use cases within cloud provider's environment. It will also emphasize on benefits, open problems, possible solutions, and the future of the technology.

serverless architectures, serverless; serverless computing, Function-as-a-Service, FaaS, Backend-as-a-Service, BaaS, AWS lambda, azure functions, google cloud functions, open whisk, stateful serverless, real-time serverless architecture, compare serverless offerings