Interior design is the method of designing\outlining the internal parts of any room or building. An interior designer is a person who executes and manages these types of projects. It is a varied profession that consists of the development of concepts, communication with the owners of the project, and managing the design.
On the other hand, the exterior design is the procedure of designing the external sections of the building. This consists of the façade, walls, roof, and foundational components. Even if the exterior design can be considered to be as creative as interior design, it is also important to have a good knowledge of structural engineering. It is usually carried out by an architect along with the help of civil and structural engineers.