1. A host system for full customization of functional process logic in an integrated system having multiple nodes, each node being independent of other nodes in said system, said system capable of handling standard markup language data, comprising: functional process logic that uses one of an agents and agent management services approach and a payload processors approach; whereby, in said agents and services approach each individual unit of functional process logic is a service, multiple services are grouped together to form an agent, and said incoming standard markup language data is processed as a document object model (DOM); whereby, in the payload processors approach functional process logic units are tied to predefined elements within said incoming standard markup language data document and processed using an event based model; a web-based scripting language environment in which said functional process logic nodes operate, said web-based scripting language environment allowing for remote administration and customization of said functional process logic nodes; and a host adapter in which said host system API is in code accessible to said web-based scripting language environment: