The Center for Applied Special Technology (CAST) is a nonprofit, multidimensional organization that works to eliminate barriers and expand learning
opportunities for all individuals through Universal Design for Learning. The CAST Website contains videos as well
as robust, free articles, guidelines
and resources related to the UDL process. The CAST UDL Guidelines provides a framework of the important components of each of the three UDL principles and their relative neural networks.
A great overview of the purpose and drive behind the CAST organization is displayed through their mission (video below). They proudly proclaim their motto of "until learning has no limits," which perfectly aligns with their goal of the implementation of inclusive, universally-designed instruction. Their goal is to work to discover all variability in learning styles and barriers, and develop methods and resources that educators can use to reach all types of learners.
Watch the CAST mission: