Term which is one this seems chummy becoming its society ear, specially those who struggle in business world. Various article in media print and also seminar and discussion performed to pare it. But, even though, just still be is we hear question: ” What is that sih E-Commerce?” Word E-Commerce have chummy so but its own congeniality still not yet clear so in this part of circle E-Commerce is oftentimes defined by as sales of goods and service of [through/ passing] electronic medium, specially [through/ passing] internet. One of example is product sale by online [through/ passing] internet is such as those which [done/conducted] by webStore of Compass of Cyber Media. In this business, support and service to consumer use the e-mail as a means of assist, delivering contract of [through/ passing] mail etcetera. In fact there is a lot of definition of concerning e-commerce. But definitive, each time society converse about e-commerce, they usually comprehend it as business of which deal with internet. E-Commerce is also known as by e-bussines, e-tailing for the sale of ritel.