What is serverless?

Serverless is the native architecture of the cloud that enables you to shift more of your operational responsibilities to AWS, increasing your agility and innovation. Serverless allows you to build and run applications and services without thinking about servers. It eliminates infrastructure management tasks such as server or cluster provisioning, patching, operating system maintenance, and capacity provisioning. You can build them for nearly any type of application or backend service, and everything required to run and scale your application with high availability is handled for you.

What are the benefits of serverless?

No server management

There is no need to provision or maintain any servers. There is no software or runtime to install, maintain, or administer.

Flexible scaling

Your application can be scaled automatically or by adjusting its capacity through toggling the units of consumption (e.g. throughput, memory) rather than units of individual servers.

Pay for value

Pay for consistent throughput or execution duration rather than by server unit.

Automated high availability

Serverless provides built-in availability and fault tolerance. You don't need to architect for these capabilities since the services running the application provide them by default.