Function-as-a-Service is a type of cloud computing service designed to help developers build, compute, run, and manage various application packages as functions without maintaining their own infrastructure.
As such, you could say that FaaS is an event-driven execution model running on stateless containers. In this scenario, you can manage different functions through server-side logic and state.
What does that mean? Let’s take a step back.
To put it simply, FaaS allows developers to run code in response to events. They can do this without handling all the infrastructure challenges common to creating and launching microservices applications.
As the idea was built on the foundation of serverless computing technologies and architectures, development teams can quickly deploy cloud applications without ever managing servers.
FaaS solutions are freely available across major public cloud services. In this scenario, the cloud services provider will manage the hardware, virtual machine operating system, and web server software.
You can also provision FaaS on-premises, adding robust new capabilities to enterprise IT app development. As the service provider provides the infrastructure, no infrastructure management is needed.
You can develop functions in insolation inside containers. This approach gives development teams total freedom to concentrate entirely on specific functions in the application code.
To put it simply, FaaS allows developers to acquire backend services for cloud applications. You can divide your functions and trigger them during different events. These functions and the event source can be uploaded to the cloud services provider’s FaaS platform.