Divide and conquer. This saying, in a software context, means that one’s chances for success can increase when you take a large, complex application, and break it down into bite-sized pieces. APEX makes this strategy relatively easy by enabling individual APEX applications to communicate with one another by sharing a single browser cookie. A single login application opens the door to running multiple specialized APEX applications without the need to log in multiple times. This chapter explores this strategy in more detail.