Evaluation of “Serverless” Application Programming Model : How and when to start Serverles

Sammanfattning: Serverless is a fascinating trend in modern software development which consists of pay-as-you-go, autoscaling services. Promised reduction in operational and development costs attracts not only startups but also enterprise clients despite that serverless is a relatively fresh field where new patterns and services continue to emerge. Serverless started as independent services which solve specific problems (highly scalable storage and computing), and now it's become a paradigm shift how systems are built. This thesis addressed questions when and how to start with serverless by reviewing available literature, conducting interviews with IT professionals, analyzing available tools, identifying limitations of serverless architecture and providing checklist when serverless is applicable. The focus was on AWS serverless stack, but main findings are generic and hold for all serverless providers serverless delivers what it promises, however, the devil is in the detail. Providers are continuously working to resolve limitations or building new services as solutions in order to make serverless the next phase of cloud evolution.