IBM acquired Rational Software in 2003 as part of its plan to build a complete, process-integrated middleware technology development platform. Since then, IBM's Rational Software unit has provided new tools for IBM to sell, and helped IBM improve product development and customer service methods. Since its acquisition, Rational's business has doubled organically and through acquisitions. IBM has fused Rational technology with WebSphere, Tivoli and Lotus software for various solutions. Rational achieved its growth through governance in the development of software, systems, delivery, an enterprise modernization portfolio, languages, compilers, and an effort to support a core group of customers, service-oriented architecture (SOA) developers. Strong demand continues for IBM Rational's requirements, quality and other management tools. The unit's focus remains on customer satisfaction. Companies are realizing their software value and how their code relates to the bottom line. In addition, companies need more productivity from a smaller pool of employees. By 2010, IBM expects half its profit will be generated by its Software Group. At any rate, 90 percent of Fortune's top 100 companies are currently using Rational software. In addition, IBM Corp. uses an enterprise-wide custom version of the Rational Unified Process (RUP), a methodology for software development. IBM Rational's Jazz project, being used in an open software community of partners, developers and customers, is an effort to simplify team and process software development. Rational is expecting the small and midsize business segment to become 'increasingly important.'