The Bella Node license authorizes rendering with Bella on one machine per license, at any given time.
Licenses are not locked to any particular machine, nor to any particular operating system, allowing for hassle-free network/farm deployment.
Each license perpetually authorizes use of any version of Bella built within one year from the date of purchase. Licenses may be renewed at a 50% discount within 1 year from expiration, 25% discount within 2 years.
NOTE: the Seat license includes 5 free Node licenses, so take care not to purchase Node licenses unnecessarily, if you are also purchasing a Seat license.