Before you deploy Linux on the mainframe, you want to know what kind of business scenario can be advantageous. This book features two example companies: ISPCompany and StoreCompany. These companies demonstrate some typical Linux on the mainframe uses. One typical use is integrating middle-tier servers with z/OS or VSE/ESA. Another is consolidating stand-alone servers not needing integration with other systems. Scenarios that represent an in-between of these are, of course, also possible.
We have chosen two companies because with Linux on the mainframe we can observe two different styles of IT growth that we call horizontal and vertical. ISPCompany and StoreCompany represent typical businesses that are using Linux on the mainframe differently:
In this chapter we discuss: