In general, there are two parties in a market, one who  has a product, a seller and someone who needs it, a buyer.  Even though, both the buyer and seller are far away, the internet made the transaction possible. But, the buyer pays an extra amount for the extra distance in the name of transportation. Obviously, it is called a Web-2 centralized business transaction. Whereas, a decentralized system traces the product from the nearest possible source of the buyer and delivers it by a nearest possible self courier agent. Certainly, the latter one is economical and fast. Such an innovative business method was introduced by Bizaka in the name of ZakaMart.