"Serverless" can have different meanings. But regardless of what anyone says, one thing is clear: there are many servers behind it! The goal of this presentation will be to understand when, how, and why to adopt serverless technologies. To do that, we will observe the three pillars of serverless: event-driven, micro-billing, and self-scaling abstract infrastructure, and on top of that we will look into the expected developer experience and how it will positively impact developers' productivity. Lastly, let's take a look at some architectural patterns that can help you initially adopt the technology for brand new projects as well as into existing systems.