Dr. Scott Bernard give a lecture on Enterprise Architecture and his EA Cube model.
Check out the latest edition of his book on Enterprise Architecture: https://www.amazon.com/Introduction-Holistic-Enterprise-Architecture-Fourth/dp/1728358051/ref=sr_1_3?crid=1RFKEHUKSXXMI&keywords=introduction+to+enterprise+architecture&qid=1644588798&sprefix=introduction+to+enterprise%2Caps%2C63&sr=8-3