Read, write and set conditions on any data from anywhere in your database.
Let's say you use 'Obscure Events' for bookings. Your booking plugin stores appointment slots in its own database table Breakdance can't see. Connect fetches from the table and makes it available to Breakdance. Now you can show an event date or use it to conditionally show elements or fetch posts.
The Query Builder screenshot shows that we fetch posts based on Smithy Connect fields in all the Breakdance loops.

FluentCart is a powerful alternative to WooCommerce. Now you can get customer orders, subscription status, address or any other details and use them to show/hide content.
You can also create a field and let your client edit it front-end. Now they can set dates for items to show or hide - without even logging in. Huge power for them, kudos to you!
As in the Conditions screenshot, use Connect fields to show, hide or schedule anything.

Many of us have customers who need to make frequent changes, but who we wish we didn't have to give logins to because they tend to break things!
With Connect you can add any field to a Breakdance form for the client to fill in. Now it's easy to build a dashboard front or back-end - and let the client set their own opening hours, menu prices or even the site tagline.
The SC Save to Fields screenshot shows us mapping a form field to a Connect field.

You can show/hide elements, pages, posts and loops, show posts in loops by any condition including dates, bring any data from anywhere to the front-end and create user forms to update site-wide settings! You could even use Connect to let users change site colours, comment status, langauge - anything.
Breakdance is already extremely versatile, Smithy Connect is the magic ingredient that make it even more versatile with ANY plugin.