Server less architecture – as the word may give you impression of designing without servers, but it should be different because without servers, there cannot be a way to serve the requests coming from any client application. So, what is Serverless architecture?

In simple words, serverless architecture facilitates user to run code on the servers, without managing the servers. Serverless is a style of application architecture which allows focusing on the business logic without worrying about the environmental or infrastructure related concerns. It eliminates the need to manage servers on cloud and replacing them with pervasive use of functional computing resources; of course, one still needs to plan for capacity, disaster recovery etc.

This approach helps us to cut down efforts in traditional deployment architectures for maintenance and monitoring servers, handling any unforeseen security threats, skilled resource to manage infrastructure, software license cost etc.

Related to this serverless architecture, evolution of “as-a-Service” from Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) is also interesting, which represents the different services offers by cloud providers. Cloud providers also started providing hardware and software assets as per-use service-based models, resulting in significant reductions in costs when compared to existing expenditures of the IT organizations

Function as a Service (FaaS) – backbone of Serverless architecture - is a type of cloud computing service that provides a platform that allows customers to develop, run, and manage application functionalities without the complexity of building and maintaining the infrastructure. Building an application with this model is the core of “Serverless” architecture.

Amazed by the features and business benefits of FaaS, we picked up Amazon Web Services(AWS) called AWS Lambda for designing one of our main product focusing on high-volume Video streaming. AWS offered a new way to deploy web, mobile or IoT application’s code to the cloud. Instead of deploying the entire codebase of the application all at once, Lambda allows to deploy application’s functions individually, to their own containers. These features helped in reducing costs, rapid development and deployment, reduced time to market, build-in scaling and failover management.