Mainframes were the first computing platform of corporate information
technology. As the industry has grown, mainframes have continued to evolve
and integrate into the various incarnations of enterprise architecture. In
fact, as the first computing system, mainframes enjoy a special role when
looking at enterprise architecture, as mainframes have participated in
virtually every flavor of architecture, starting with the incarnation of IT,
when a mainframe was the architecture.
Mainframes were initially deployed as monolithic, standalone systems. The
prevailing attitude of the day was that all applications could and would
reside on a single large computing platform, the mainframe. Application
integration was all nicely handled through mainframe resident data stores,
and callable transactions. However, as IT evolved into client/server and
other non-mainframe architect... (more)
Every organization is under pressure to deliver tangible business benefit
through its IT projects. This point is illustrated by the fact that almost
all IT projects are justified based on the ROI they will deliver. However,
very few organizations follow up and review all projects based on the ROI
they actually provided. While the reasons for this aren't clear, one
compelling, well-documented statistic is that on average only one out of
three IT projects will be successfully completed and deliver the ROI they
promised.
If we dig deeper into understanding why two-thirds of project... (more)