Digital Business Ecosystem (DBE) is an open source software platform based on internet technologies designed to help small and medium enterprises create, integrate and provide services efficiently. E-marketplaces allow the exchange of products and services through electronic data to facilitate transactions online. They provide advantages like lower costs but also disadvantages like dependence on technology and security issues. Electronic storefronts and webstores allow merchants to advertise and sell products online while electronic malls display catalogs from multiple sellers and charge commissions on sales. Web portals bring together information from different sources in a uniform way and provide collaboration benefits but can be complex to set up.