Apple is teaming up with former nemesis IBM in an attempt to sell more iPhones and iPads to corporate customers.

The exclusive partnership announced Tuesday calls for the two technology companies to work together on about 100 different mobile applications designed for a wide range of industries.

The applications, expected to be released this fall, will feature some of the data-crunching tools that IBM Corp. sells to companies trying to get a better grasp on main markets while scouring for new money-making opportunities.

IBM is also pledging to provide better security to reassure companies concerned about hackers stealing vital information off the mobile devices of their employees.

The partnership underscores how technological upheaval can change allegiances. Apple Inc. and IBM were once bitter rivals when they both made personal computers.