Workstation License is working for one workstation.
Concurrent License allows sharing or floating of licenses among multiple users. For example an office with 3 users on different shifts could purchase a single concurrent license shared at each user’s desk rather than 3 separate Workstation licenses.
Subscription License prices are based on per month payments. It includes Maintenance, that includes upgrades to newer versions and tech support.
Subscription License has a 6 months minimum subscription period. If canceled before 6 months, an early cancellation fee equal to 20% of the 6 month period will be charged.