LearnDash LMS EDD Integration Addon creates the ability for you to sell your courses using the Easy Digital Downloads (EDD) ecommerce plugin.
Why Use Easy Digital Downloads?
A few reasons why you might want to use EDD to sell your courses:
Use additional payment gateways not directly supported by LearnDash (anything other than PayPal, Stripe & 2Checkout)
Offer coupons or discount codes
Sell courses in a bundle (i.e. one price provides access to multiple courses)
Sell access to courses as an ongoing subscription
You want to control the emails sent to course enrollees