Start
1964
![IBM Cambridge Scientific Center](/gif/ibm-csc.jpg)
CP-40 introduced CP/CMS as an experimental time-sharing research project for the IBM System/360 and laid the groundwork for VM
1967
CP-67 remained a
research system and was
made available to key
time-sharing customers
as a supported product
![IBM System 360/67](/gif/ibm36067.jpg)
1972
VM/370 was officially
announced by IBM
on August 2
![VM/370 Logo Screen](/gif/logo-370.gif)
1973
The VM Library was
started at University
of Waterloo
1976
VMSHARE
online community
and discussion
group was created
![Early SHARE Logo](/gif/76-share.gif)
1980
VM/SP (System Product) was released on December 12, featuring XEDIT
![Screenshot of XEDIT](/gif/80-xedit.gif)
1981
PROFS (PRofessional
OFfice System)
released for VM
![IBM PRofessional OFFfice System (PROFS) for VM](/gif/81-profs.jpg)
1982
VM/SP HPO (High
Performance Option)
released on March 27
1983
![VM Teddy Bear](/gif/83-bear.gif)
1984
VM/XA
(eXtended Architecture)
Migration Aid released
on February 6
1985
VM/IS
(Integrated System)
released on
December 17
1988
VM/XA SP released
on February 15
1989
CMS Pipelines was made
available worldwide
1991
VM products converge to
single operating system -
VM/ESA released on
March 29
![Viva VM/ESA!](/gif/91-vmesa.gif)
2000
Linux guest support
officially available for VM
![Linux on S/390... it's cool.](/gif/00-linux.jpg)
2001
VM/ESA rebranded to z/VM
![z/VM Logon Screen Logo](/gif/01-zvm.gif)
2003
Virtual Switch (VSWITCH)
support featured in z/VM 4.4
2018
z/VM 7.1 ushers in the
Continuous Delivery model
z/VM Council is founded
2022
SSI clusters expanding to
eight z/VM instances
with z/VM 7.3
VM's 50th anniversary
celebrated on August 2
![1972-2022 VM Anniversary](/gif/22-vm50.gif)