Concepts and definitions

This section describes key concepts and defines terminology specific to this solution:

origin

The source location where original images are stored, which can be an Amazon S3 bucket or an external HTTP-accessible domain.

transformation policy

A reusable configuration that defines a set of image transformations, output settings, and conditional logic that can be applied to image requests.

mapping

Configuration that routes image requests to specific origins based on request path patterns or host headers.

cross-origin resource sharing (CORS)

Defines a way for client web applications that are loaded in one domain to interact with resources in a different domain.

fallback image

Image that you set to show when the intended image doesn’t load.