In contrast, OpenEdge distributed application computing, through the introduction of the AppServer and WebSpeed, expands computing capabilities beyond the limited boundaries of the two-tier model. This section describes the n-tier models described in this chapter in comparison with this two-tier model: the logical three-tier model and the physical n-tier model. As previously mentioned in this chapter, these models help illustrate how you can distribute your application in an OpenEdge distributed environment. You are not limited to using only these models.
