What is a key characteristic of Serverless architecture?

What is a key characteristic of Serverless architecture?

• A. It runs continuously
• B. It runs in response to events
• C. It uses dedicated servers
• D. It requires manual scaling

Answer: (B)

In serverless architecture, code is executed only when a triggering event occurs, making it event-driven. This means functions run in response to things like an HTTP request, a file upload, or a message arriving in a queue, with the cloud provider handling the underlying servers and scaling automatically. You typically pay only for the actual time your code runs, not for idle capacity. This automatic, on-demand execution is what distinguishes serverless from models that run continuously, use dedicated servers, or require manual scaling.

In serverless architecture, code is executed only when a triggering event occurs, making it event-driven. This means functions run in response to things like an HTTP request, a file upload, or a message arriving in a queue, with the cloud provider handling the underlying servers and scaling automatically. You typically pay only for the actual time your code runs, not for idle capacity. This automatic, on-demand execution is what distinguishes serverless from models that run continuously, use dedicated servers, or require manual scaling.