Consider your favorite concept from this course. Explain the concept as if you were teaching it to someone in an upcoming class. How would you present the topic? How would you explain it so it is easily understood?It is difficult for me to choose one concept from this course as my favorite. I have used the systems and concepts we have studied for years, and gaining a better understanding of them have helped me tremendously.To select one I would choose e-commerce, which involves conducting business (buying and selling goods and services) online. In brick-and-mortar retailing, one has to go to a physical location to conduct business. E-commerce on the other hand allows us to conduct business from virtually anywhere in the world. It makes it possible to shop from your desktop, at home, at work, or even from your car, using mobile commerce. A marketplace extended beyond traditional boundaries and removed from a temporal and geographic location is referred to as market space. Ubiquity reduces transaction costs. To transact business, it is no longer necessary that you spend time or money traveling to various locations to make purchases. Most traditional retailing or shopping is conducted locally or regionally. Some distinguishing