Today's world is increasingly based on digital access to information. People conduct essential aspects of life online through their web browsers and mobile applications: education, healthcare, banking, shopping, entertainment, and even jobs are conducted through the internet. To be cut off from the digital world is to miss these essential connections; this is exactly what happens to people with disabilities when the websites and content they try to use have accessibility barriers. People and organizations creating web content need to understand the elements of accessibility, important laws and regulations that guide accessibility efforts, and ways to improve the accessibility of web content. Eliminating these barriers is an important step towards a more inclusive society.

The online pivot necessitated by the COVID-19 pandemic of 2020 has placed online instruction in the spotlight. While schools and universities around the world quickly moved classes online and kept students learning, it became apparent that most institutions and instructors lacked a solid foundation in creating online curriculum. Recognizing that online instruction is here for the long-term, building skills in creating and managing the online curriculum is essential. This chapter covers the history and foundations of curriculum, explores key issues and opportunities for educators just getting started with online learning, and recommends foundational practices for developing effective online curriculum. The approach takes a practical perspective, stepping through the curriculum development phases and concluding with a look at some of the challenges curriculum developers and instructors face.