April 2018 marked the 54th anniversary of IBM’s mainframes. It is uncertain if anyone could have ever predicted such a long and successful life for them. A quick historical sketch: IBM launched the first modern mainframe, IBM 360, on April 7, 1964. With 229,000 calculations per second, it was the mainframe that played a key role in taking mankind to the moon. Fast forward to the current era: multiple banks, the healthcare industry, along with the insurance and government sector, still continue to use mainframes. Mainframes might not be trending as the hottest technology of the decade, but they act as the backbone for these and various other industries due to their reliability, availability, security, and transaction processing speed.