Advances in computing technology and reductions in development cost have greatly increased the number of people who use computers, and have expanded the number and types of applications available to them. People want their applications to share data and to be consistent with one another with respect to terminology and appearance. They also frequently need access to applications and data on computers in other locations; the computers may be models and types that these persons do not normally use. Integrating application functions in a seamless environment is an important step toward satisfying some of these requirements. This paper discusses what integrated applications are, why they are valuable, and how Systems Application Architecture (SAA) can make it easier to develop them.