A personal membership only allows a single person to access the course(s) purchased, but a corporate/educational subscription allows multiple simultaneous log-ins with the same username/password.
You could, for example, empower your entire organization with unrestricted access to one or more online courses.
Corporate subscriptions are priced per video view.
A course typically consists of around 250 videos. You can purchase 5,000 video views for $49.99 that will enable 20 students/employees to work through an entire course for less than $2.50 per student/employee (views will be available for a 12-month period from the purchase date).