Mainframe computers are often seen as ancient machines—practically dinosaurs. But mainframes, which are purpose-built to process enormous amounts of data, are still extremely relevant today. If ...

Mainframe computing is having a moment — again. Nearly 60 years after the first IBM System/360 debuted as a mainframe platform, it continues to evolve in ways that defy expectations, powering critical ...

IBM's latest mainframe is available with the option of a cut-down operating system that only runs newer software, and does not run traditional mainframe software such as CICS transaction processing.

IBM has dominated the mainframe computer business since the category was created four decades ago. And it still gets about one-quarter of its $100 billion in annual revenue from sales, software, ...

IBM sold off large portions of its hardware businessin 2014. The company no longer sells the Intel-based servers that dominate the data center, and it no longer manufactures its own processors.

Forty years after Big Blue introduced the S/360, the zaftig systems are still going strong and finding a way to fit into 21st-century computing. Michael Kanellos is editor at large at CNET News.com, ...