The seven principles of universal design are: Equitable use, flexibility in use, simple and intuitive use, perceptible information, tolerance for error, low physical effort, and size and space for approach and use.
The three UDL principles are engagement, representation, and action and expression.
The chart below includes the three UDL principles adapted from CAST.
The goal of Universal Design is to maximize usability by individuals with a wide variety of characteristics.
Whether we are talking about learning strategies or physical space, Universal Design operates by a set of principles designed to maximize access by everyone.