CAS is an Enterprise Single Sign-On service — you log in once and can then access a variety of web applications. CAS stands for Central Authentication Service. CAS was originally developed at Yale University and is now a JA-SIG project.
Here at the University of Saskatchewan, we use CAS authentication for blogs, wikis, and a slowly expanding list of other web services. CAS also makes it easier for us to add services into PAWS. To use CAS, simply login with your Network Services ID (NSID).
If you are a campus web developer who would like to use CAS authentication on your own web site, please see our notes on using CAS.
If you want to know the nitty-gritty detail of how we set up the trust between CAS and PAWS, please see our notes on trusting another CAS server.