One of the predominant words which are taking up the horizon of Cloud computing by storm is Functions as a Service (FaaS) and Serverless. Firstly, let’s understand what Serverless and FaaS are and why people often use Serverless and FaaS interchangeably. The major truth is that FaaS is basically a member of serverless and is a subset. Whereas on the other hand, FaaS acts as the most vital technology in serverless architecture and focuses solely on the event-driven computing paradigm. So let us understand the concept of Serverless and Functions-as-a-Service in detail.