Solutions that govern who can access resources, built upon openly available and modifiable code, represent a significant alternative to proprietary systems. These solutions provide mechanisms to authenticate users, authorize access based on roles or attributes, and audit access attempts. For instance, a university might use such a system to control student access to specific online courses or campus buildings.
The importance of these systems stems from their enhanced transparency, customizability, and potential cost savings. The open nature of the code allows for community scrutiny, potentially leading to more secure and reliable implementations. Moreover, organizations can tailor these systems to meet specific needs that proprietary solutions may not address. Historically, the development of such systems has been driven by the desire for greater control and flexibility, as well as the avoidance of vendor lock-in.