Bengaluru, Oct. 28 -- Cognizant Technology Solutions Corp. is undertaking what is arguably its largest restructuring in nearly four years, merging its application development, digital engineering and software testing practices into a single group as clients demand greater returns on their artificial intelligence (AI) investments.

Effective 26 October, the Nasdaq-listed company started to reorganize its business into three "building blocks"-Industry Delivery Units (IDUs), Frontier Capability Units (FCUs) and Application Services Units (ASUs)-and has laid the groundwork for equipping its employees with these changes over the last four months, according to internal memos accessed by Mint.

The restructuring is part of Cognizant's efforts to...