I'm a bit confused on AESOP, Lasso and Story.am, but here's what I understand:

1. AESOP is the plugin that runs both Story.am
2. Lasso is another plugin that has a similar functionality to AESOP by the same developers, but is only for inline content editing, an strongly recommends AESOP for the seemingly critical drag-and-drop component.
3. Story.am is essentially a hosted blogging platform built atop AESOP that previously was paid and is now Pro.

Is that how it is?