Reusable workflows and composite actions

Reduce duplicated automation

When many repositories use nearly identical CI or deployment logic, reusable workflows or composite actions can centralize common behavior.

Reusable workflows

A reusable workflow can be called by another workflow and can accept inputs and secrets. This is useful for organization-wide standards.

Centralization needs version control

Shared automation is itself software. Review changes carefully because a change to a reusable workflow can affect many repositories at once.