Not that long ago if you wanted to buy something then you would have to go to the local shops. If they didn't have what you wanted then you would either have to do without or buy a substitute.
With the development of the Internet a phenomenon known as 'electronic commerce' or 'ecommerce' for short, has been growing.
Ecommerce has now grown to such an extent that it is becoming the major way to shop for many people especially for certain things such as music.
Ecommerce is a popular topic that comes up regularly in examination questions. Make sure that you are familiar with the important points.