A software design pattern in which a third party vendor provides the infrastructure is called serverless architecture. This implies that you outsource deployment, allocation of resources, provisioning, scaling, maintenance of the OS, and monitoring of processes. Once the company shakes hands with these service providers, they will have to install an API at its end to access the vendor’s services. The vendor then provides the necessary tools for processes such as testing, debugging, maintenance, surveillance, security, etc. The app owner simply needs to decide which tools to use because of the event-driven nature of the serverless architecture. The serverless architecture allows the owner of the app to focus solely on business and development goals and increase value without worrying about the server-side logic or state, i.e. maintenance of the infrastructure, scalability, or tolerance of faults. Serverless architecture can run on two different models: Backend as a Service (BaaS): In a serverless architecture of the BaaS paradigm, the developer can simply focus on writing application code or business goals, and need not worry about maintaining servers to run and deploy the code. In this concept, third-party vendors own the infrastructure on which the code runs. Backend as a service provides the generic elements that are used in clubbed applications with a custom front end component. In BaaS the developers in-house are not even responsible for the backend logic. It’s generally seen that once it’s started, BaaS services run continuously. Function as a Service (FaaS): When it comes to serverless architecture paradigms, FaaS is slowly taking over Backend as a service. In FaaS, developers of in-house applications have the flexibility to create the backend logic but are not responsible for its implementation. The programmers assemble the logic code for the backend into functions called build blocks. FaaS has identical methods to microservices, where a monolithic application is divided into small and manageable microservices that can be individually and parallel scaled. Even the microservices in FaaS are further broken up into various functions. A big edge that FaaS provides over BaaS is that the services don’t have to run continuously and hence the cost of running the functions is just that. This significantly reduces the costs for the organizations. Advantages of a Serverless Architecture: Effortless Operational Management Goal-Oriented Development and Innovation Decreased Operational Costs Scalability