and SVS, as a successor to OS/360. It is unrelated to IBM's other mainframe operating system lines, e.g., VSE, VM, TPF. First released in 1974, MVS was
programs included in or available for OS/360andsuccessors. IBM categorizes some of these programs as utilities and others as service aids; the boundaries
string of MVS versions. Like OS/390, z/OS combines a number of formerly separate, related products, some of which are still optional. z/OS has the attributes
assembly language andsuccessors is a series of assembly languages and assemblers made for the IBM System/360 mainframe system and its successors through the