Decoupling backstage work with forestage work

The present invention relates to a system, a method and an apparatus used for dividually loading, managing and applying backstage work and forestage work. In some embodiments, a method is provided for an operation system executed on at least one computer. The operation system can identify and apply at least one forestage assembly and at least one backstage assembly, and the operation system and the at least one backstage assembly can dividually load the at least one forestage assembly for execution. For example, the operation system can execute the at least one forestage assembly, and not execute the at least one backstage assembly. In some other embodiments, and the operation system can use a rule related with application to identify and realize the executable code block of the at least one computer of the at least one backstage assembly.