Mainframe computers are often seen as ancient machinesโpractically dinosaurs. But mainframes, which are purpose-built to process enormous amounts of data, are still extremely relevant today. Itโs estimated that there are 10,000 mainframes in use today. Theyโre used almost exclusively by the largest companies in the world, including two-thirds of Fortune 500 companies, 45 of the worldโs top 50 banks, eight … Read the rest