Here’s what each of these Serving APIs do:
Service | Describes an application on Knative. |
Revision | Read-only snapshot of an application’s image and other settings (created by Configuration). |
Configuration | Created by Service (from its spec.configuration field). It creates a new Revision when the revisionTemplate field changes. |
Route | Configures how the traffic coming to the Service should be split between Revisions. |
This diagram explains the relationship between them:

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