Author
author tier, author instance, aem authorDefinition
In AEM, the instance where content is created — the one authors log into, with the editor, the dialogs, the workflows and the DAM — as distinct from the Publish instances that serve the public; everything an author does happens here and reaches the world only when it is activated
One Author, many Publish: the shape of every AEM deployment, and the reason “it works on author” is a real sentence. The dialogs this repository reads as authoring surfaces are Author’s; the IVY components render on both tiers from the same bundles with different OSGi configuration. Author is never on the public internet and is never behind the dispatcher’s cache, which is why it is slower and why nobody but authors sees it.
The workshop, not the shop window. A page exists on Author from its first word; it exists on Publish from its first activation.