First-Generation Managed Packaging Developer Guide
Why Switch to Second-Generation Managed Packaging?
Environment Hub Best Practices
Can I use the Environment Hub in Lightning Experience?
Where do I install the Environment Hub?
Can I install the Environment Hub in more than one org?
Can I enable the Environment Hub in a sandbox org?
What kinds of orgs can I create in the Environment Hub?
How is locale determined for the orgs I create in the Environment Hub?
Are the orgs that I create in the Environment Hub the same as the ones I created in the Partner Portal?
Can an org be a member of multiple Environment Hubs?
Can I disable the Environment Hub?
Considerations for the Environment Hub in Lightning Experience
Register a Namespace for a First-Generation Managed Package