Object-oriented analysis and design
![The Waterfall Model.](/Images/godic/202501/30/Waterfall_model_revised.svg4156.png")
![OOAD is conducted in an iterative and incremental manner, as formulated by the Unified Process.](/Images/godic/202501/30/Development-iterative4156.png")
![](/Images/godic/202501/30/Use_case_restaurant_model.svg4156.png")
Object-oriented analysis and design (OOAD) is a popular technical approach for analyzing, designing an application, system, or business by applying the object-oriented paradigm and visual modeling throughout the development life cycles to foster better stakeholder communication and product quality.