Modular kitchens consist of interchangeable cabinets and modules that optimize space. They offer advantages like standardized sizes, easy maintenance, and flexibility to change designs. Common modular kitchen layouts include L-shaped, straight, U-shaped, and island designs. The L-shaped and island layouts make most efficient use of space, while the U-shaped provides the most storage and counter space ideal for families. Modular kitchens provide functionality, aesthetics, and elegance to transform the heart of the home.