Nearly all of the discussion and debate surrounding cloud computing presumes that the ideal enterprise cloud
environment will be built on x86 processors in a massively scaled-out architecture. Until recently there has
been very little discussion about the potential benefits that the mainframe offers the enterprise as a host for
a cloud computing environment.
This paper presents the potential benefits that enterprises could derive from the mainframe as a cloud
environment in terms of cost, reliability, scalability, security and flexibility. We also set out to highlight the
changes that have taken place within the mainframe Eco-system that mean many of the traditional criticisms
of the mainframe platform are simply out of date.