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IBM sells software, computer hardware, and technology consulting services to large organizations.
IBM is a technology company that mostly serves big organizations—banks, governments, airlines, hospitals—rather than everyday consumers. Its main business today is software, especially the kind that helps companies run their operations and move data between different computer systems. It also sells consulting services, meaning IBM's people go into a client's business and build or fix their technology for them, and it still sells some hardware, like large mainframe computers and cloud infrastructure.
The way IBM makes money is a mix of these pieces. In software, customers pay subscriptions—recurring fees, often yearly—to keep using IBM's products, which is a steady and reliable stream. In consulting, clients pay for projects and ongoing help. The company's pitch is that it can handle the whole mess of a modern company's tech: buying a mainframe, connecting old systems to new cloud tools, and having experts on hand to make it all work together. That one-stop-shop appeal is why a bank might choose IBM over a dozen smaller vendors. One of IBM's smartest moves was spinning off its managed infrastructure business—the grunt work of running other companies' computer systems—into a separate company called Kyndryl in 2021. That let IBM focus on higher-margin software and consulting. It also bought Red Hat, a big open-source software company, for about $34 billion in 2019; Red Hat's tools help companies run software across different clouds, and that deal was central to IBM's shift toward a software-first identity.
IBM began as a mashup of three small companies selling punch-card tabulators, scales, time recorders and even meat slicers. The tabulating idea came from Herman Hollerith, whose punched cards helped count the 1890 US Census. The company's real bet was that machines could handle information people used to count by hand.
The company renamed itself International Business Machines, a name that said the quiet part out loud: it was no longer a collection of office-product businesses, but a machine company with factories in Europe. Thomas J. Watson Sr. was at the helm as it grew.
IBM made its boldest bet yet with the System/360, the first big family of computers that shared software and add-on equipment. Before it, each mainframe was a one-size-fits-all machine; now a company could upgrade to a new model without rewriting its programs. It was so expensive that Fortune called it IBM's five-billion-dollar gamble.
IBM's personal computer helped turn the PC into a mainstream business tool and set an industry standard. But IBM built it with Intel chips and Microsoft software instead of owning the key technology itself. That choice made the machine a hit and left IBM exposed: cheaper rivals could copy the same recipe, and they did.
IBM hit bottom with the largest loss in American corporate history at the time, about eight billion dollars, and the company was nearly broken apart. Louis V. Gerstner Jr., an outsider, was brought in as CEO. He kept IBM whole and pointed it toward services and integrated solutions rather than just selling machines.
IBM bought Lotus Development, a major software maker, as part of Gerstner's push into software and services. The deal showed the company was willing to buy its way into new parts of the business it had once ignored.
IBM made the biggest acquisition in its history, paying about thirty-four billion dollars for Red Hat. Red Hat brought open-source tools that let companies run their apps both in public clouds and in their own data centers, the heart of what IBM called hybrid cloud. IBM was betting the company on the cloud.
Arvind Krishna, the main architect of the Red Hat deal, replaced Ginni Rometty as CEO. Red Hat's CEO Jim Whitehurst became president the same day. Putting cloud leaders at the top made the message plain: hybrid cloud and AI were now the main event.
IBM split off its managed infrastructure services business as a separate company, Kyndryl, with IBM holders getting one Kyndryl share for every five IBM shares. The spinoff narrowed IBM down to what it wanted to be: hybrid cloud and AI.
IBM launched watsonx, its AI and data platform, with three parts: one for building and tuning AI models, one for data, and one for governing how AI gets used. By early 2026 IBM said its generative AI business had passed twelve and a half billion dollars.
IBM bought HashiCorp for about six and a half billion dollars, adding software that automates and secures cloud infrastructure. IBM said these tools would work with Red Hat, watsonx and its consulting arm as one hybrid cloud platform.
IBM warned that second-quarter revenue would land far short of estimates, and the stock crashed more than twenty-five percent in a day, its steepest drop ever, wiping out about sixty-seven billion dollars in value. CEO Arvind Krishna said customers were shifting spending toward AI hardware like servers and memory, and many big deals failed to close on time. His verdict: IBM did not adapt and move quickly enough.
The business is far from perfect. IBM has spent years as a slow grower, and its revenue has often been flat or shrinking. It has used its cash to pay a hefty dividend and buy back shares—big buybacks in past years shrank the share count substantially—which helps earnings per share look better even when growth is thin. It faces tough competition from Microsoft, Amazon, Google, and Accenture, all of which sell overlapping software, cloud, and consulting. IBM's strength is its deep relationships with giant institutions and the trust that comes from decades of running their most critical systems—a moat that is real, but one it has to keep earning by staying relevant in a fast-moving market.
Saved answer · last researched 21 Oct 2026