This chapter explores e-commerce enterprise application security integration and new technology’s support of rapid deployment of secure e-commerce applications. The technology, based on the integration of distributed component computing and information security, represents new power to mount secure, scalable e-commerce services. The chapter also describes how security enables new e-commerce applications that were not previously feasible, and how e-commerce solutions create new security responsibilities. Next, the chapter describes the many challenges of enforcing security in component-based applications. Finally, the chapter formally introduces Enterprise Application Security Integration (EASI), which is used to tie together many different security technologies and, as a result, provides the framework for building secure component architectures.