What's the difference between redemption codes and invitation codes?

Redeem code: It is a combination of a series of numbers or letters. Users can use the redeem code to exchange for courses, coupons and other benefits in the online store. Store operators can distribute redeem codes to users by selling them on other platforms or printing offline gift cards.

Invitation code: It is used to invite friends, peers, superiors or students of other content products to experience courses. You can give an invitation code to others to invite them to study the teacher's paid content products for free.