CUPERTINO, Calif. — Apple and IBM on Tuesday announced a wide-ranging partnership that the two companies’ top executives described as a major initiative intended to bring advanced mobile and data-analysis technology more broadly into the corporate world.

IBM and Apple have been working together on the venture for several months, and they are jointly working on more than 100 business software programs developed exclusively for Apple’s iOS operating system and for use on iPhones and iPads. The applications will be tailored for use in industries including retail, health care, transportation, banking, insurance and telecommunications.

“We’ve already seen some unbelievable work,” Tim Cook, Apple’s chief executive, said in an interview conducted along with Virginia Rometty, IBM’s chief executive.

Cook described the venture with IBM as “a landmark partnership” for both companies.

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Rometty said the companies planned to combine data analysis, cloud and mobile technology, turning Apple’s smartphones and tablets into decision-making tools rather than ones used mainly for email, text-messaging and contacts.

The long-term goal, Rometty said, is to use the technology to “re-imagine how work is done” and to “unlock value, remake professions and transform companies.”

The two executives offered few examples. They mentioned an airline pilot tapping a calculation of updated fuel use and flight paths as weather conditions change, or an insurance agent calibrating risk assessments of a potential client.

But this week was a time for the announcement, not product demonstrations, they said.

The 100 applications or so will be introduced starting this fall.

Under the partnership, IBM will serve as a sales force in corporate accounts for Apple products and provide on-site service, which have been gaps in Apple’s capabilities.

Even without a direct sales force and service, Apple’s iPhones and iPads are used by more than 92 percent of the Fortune Global 500 companies, Cook said.