There are 2 types of PD4ML licenses: Single and Volume.

PD4ML Java Library Standard, PD4ML Java Library Web and PD4ML Java Library Pro are single licenses. A single license is valid for a group of developers OR for a single desktop product title OR for a single web deployment.

A single web deployment means a deployment to a single hardware web server that identified by a single IP/DNS address.

Special situations:

• If your PD4ML-enabled web application runs in a clustered environment, than you need a single license per each clustered server.
• If your single server runs multiple PD4ML-enabled web applications accessible by different addresses, than you need a single license per address.
• If a cluster of servers runs multiple PD4ML-enabled web applications accessible by different addresses, than you should compare the number of servers in the cluster with the number of external addresses and take the greatest number as a quantity of needed PD4ML licenses.

PD4ML Volume License and its extension PD4ML Source Code License allow to deploy PD4ML libraries (Standard or Pro) with your web or desktop applications to an unlimited number of client computers or web servers.