Serverless architecture is a software design pattern that allows developers to build and run services without having to manage the underlying infrastructure. The developers can write and deploy code, while a cloud provider provisions servers to run their applications, databases, and storage systems at any scale.
Serverless environment provides the flexibility to pay-as-you-use. In this model, users will need to pay only for the time the resources were active or (in some cases) volume of data managed by the cloud.
Serverless Architecture design may use third party services or in stateless compute containers and running custom codes, respectively, known as BaaS and FaaS.
- Backend as a Service (BaaS): a service model which enables developers to focus on managing the frontend of applications and help them get rid of backend development tasks like hosting, cloud storage, and database management. Developers can utilize APIs and SDKs offered by Baas providers to reduce development costs and time-to-market.
- Functions as a Service (FaaS): also known as serverless functions, is a service model that allows developers to run code directly in the cloud without the need to build packages or maintain any infrastructure.
Some of the widely used serverless services provided by the cloud providers are Microsoft Azure functions, Google Cloud functions, IBM OpenWhisk and AWS Lambda.
Cloud providers like Azure, AWS, GCP etc. provide pre-built environments for different operating systems and technologies and help the subscribers to Go-Live with minimal efforts.
The availability of different cloud computing models like IaaS, PaaS, BaaS, FaaS gives the flexibility to choose from different computing options and get started with the application development at the earliest.
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