New Delhi, July 3 -- A global technology giant's attempts to sell its software licences directly to clients might lead to an unexpected casualty in Sonata Software Ltd, which counts that tech company as one of its five largest customers.

Sonata Software, which entered Indian IT's $1-billion annual revenue club last year, is expected to get less business selling Microsoft licences, according to at least three people with knowledge of the matter.

According to experts, the IT services company gets more than $500 million from selling Microsoft product licences, making it one of the only large IT outsourcers to sell such licences. This translates to almost half of its $1.2 billion revenue in FY25.

"Microsoft has talked about, or they're con...