Action Mapping is a streamlined approach to business training developed by Cathy Moore. It's my go-to approach for instructional design projects, and this is mainly because it brings the focus to performance (what people need to do) instead of information (what people "need" to know).
Action mapping is a perfect fit for anyone looking to produce business results with their instructional design efforts, and it is good to familiarize yourself with the process even if you're just breaking into the field of instructional design.