Elvior has various licensing options:

Node-locked licenses are usable only on a single node/user. 

• Floating/multi-user licenses

With floating/multi-user licenses any user can use the tool, up to the limit of users specified by the license.

Licenses can be purchased for as long a period as you need them:

• Permanent licenses

Permanent license is an one time sale of the product (never expires).
Permanent licenses do not include product updates nor support. Active support which includes product updates can be purchased seperately.

• Terminable licenses

Terminable licenses are valid for a specific time period. Support and maintenance is included. Time periods from 1 week to 1 year  are available.

• Evaluation licenses

Evaluation license is for evaluation purposes (usually it is limited to 15 days). Evaluation license is free of charge.