Analytics Software

hi all,
in my projects, customer (a bank) already has many applications (bankend & frontend) that are complicatedly connected. I intend to use oracle fusion middleware to integrate all applications and make adding new applications in the future easier. I have worked through documents in the oracle website but I still have no idea how to use oracle fusion middleware to address the requirement, besides oracle fusion middleware includes a bundle of applications I don't know which one I would need.

could anyone give me some instructions ? appreciate your help.

thank very much,