Benefits of IBM mainframes today

Chapter 3 discussed the benefits that have been part of the mainframe environment since the
IBM S/360 was shipped. They can be summed up with this phrase: qualities of service. We
listed benefits of the z/OS operating system as well as benefits from mainframe applications.
z/OS-related benefits
– Advanced workload management
– Centralized operations and integrated systems management
– Non-disruptive change management
– System integrity and security
– Virtualization and scalability
Application-related benefits
– Transaction processing
– Interoperability with distributed systems
– Colocation of application components
– A single version of the truth
The System z mainframe has been providing high quality, high availability service for
decades, which is why 2/3 of the business process worldwide runs on mainframes.

See: http://www.redbooks.ibm.com/redpieces/pdfs/redp4938.pdf