For tags. When you select a tag, the agent will always use the version associated with that tag. For your use case, you can edit and publish the agent to track changes. Once done, assign the tag to the new version, and the agent will automatically use the tagged version. For the latest published , you can have several published versions , this option will always use the last one For the latest created its the same concept as the published it will always use the last latest version you made (last draft ) Tags are simple I recommend you to use them.