ADDIE 

The ADDIE model is a well known traditional model for course design. There are five steps of the process: Analysis, Design, Development, Implementation and Evaluation. Each step builds to the next step with revisiting previous steps as needed. Many other course design models have emerged with the ADDIE model as a foundation. 

Learning experience designers can help with all phases of course development using the ADDIE model. 

ELM Learning (2022) - What is ADDIE? Your Complete Guide to the ADDIE Model