What are the rules and requirements for conducting business transactions in electronic form? In a commercial environment, parties enter into an endless variety of transactions. These include contracts governing the purchase and sale of goods, lease agreements, negotiable instruments, agreements for the creation of security interests, loan agreements and promissory notes, filings with government agencies, assignments of rights or title, license agreements, insurance contracts, proxy agreements, and the like. As the Internet becomes an integral part of business, there is an ever-increasing desire to conduct these transactions in that electronic medium. This chapter will address the legal issues raised by the process of entering into a transaction using electronic means. It will focus primarily on U.S. law, although the issues are largely the same worldwide.