One software license is required per developer. Run-time royalty free.

ComponentOne OLAP for Silverlight includes new releases, updates and upgrades, and email and online support for one full year from your date of purchase.

Your subscription starts the moment you purchase the product and will expire one year later at midnight 1 day previous to the date purchased. For example if you purchase at 16:00 on 04/05/2009 then your subscription will expire at 23:59 on 03/05/2010. This is from DATE OF PURCHASE, and not DATE OF REGISTRATION. If you wish to continue to receive updates for this product you will need to renew (or repurchase) your subscription.