Bases is a tool to sync your Airtable bases.
That means you can collaborate with your partners seamlessly. Examples of what you can do :
share only some fields of a table to your client, let them edit and get that information back to the master base ( sync two-way )
share a view with edit access
Just look at the color of the config base:
if it's grey, it means we are waiting for you to put your first base
if it's blue, we are checking your settings and deploying ( for the first time )
If it's green, your settings are correct and it's syncing.