Final answer:
After a needs analysis in the ADDIE model, the Design phase follows, where detailed planning for the training program occurs, leading up to the Development phase where materials are created.
Step-by-step explanation:
In the ADDIE training process model, after a needs analysis has been conducted, the next phase is Design. During this stage, detailed planning occurs, including the creation of learning objectives, choosing the right delivery methods, and determining assessment strategies. After the design phase, the process moves on to the Development phase, where the actual training materials and programs are produced based on the design specifications.