Deployments are done by many tools with different levels of happiness, but the real killer quality of Rudder is its capacity to measure conformity of what you've deployed, otherwise you stay blind.

creating rules with a easy to use graphical interface, free linux agent with a lot of pre-defined rules, low ressources consumption and an agent with a "push" mode protocol.

The desired state is enforced continously and near real-time reporting is provided on a very detailed level, which is easy to understand in the complex but useful WebGUI. Supported operating systems range in a very large timeframe, which is essential for enterprise distros having sometimes ~5-8 years of lifetime. The REST API provides a quite usable way to interface with the functionalities, and also the Datasource plugin allows to integrate it with other existing