Based upon the requirements laid out in the previous section, it is clear that an important part of a company's overall EAI infrastructure is a declarative processing environment. To this end, we have devised a logical architecture that illustrates for companies the key components for designing such an infrastructure and how products that satisfy this need fit into the overall "big picture" of EAI.
Figure 2-1 depicts a multi-layered approach toward integrating applications in a many-to-many scenario, as discussed earlier in this chapter. There are three major horizontal components that are tied together by four vertical components. Each of these is discussed in further detail below.