Simple definition
OAuth consent authorizes an application to access specific resources or scopes on behalf of a user or organization.
Purpose and use
OAuth consent authorizes an application to request defined access to resources through specified permissions.
How does it work?
Delegated access uses a user context; application permissions can support operation without a user present, according to the service and granted authorization.
Example and verification
To understand access, compare consented permissions, the actual issued token and restrictions enforced by the resource.
Points to watch
Consent is not merely application sign-in. Excessive permissions can create ongoing access requiring assessment beyond signing out.
In short
Distinguish authentication, consent and final authorization of each operation.