Tata Consultancy Services has won a landmark deal worth about Rs 1 lakh crore from Best Buy's Indian arm. It is the largest deal in the company's history.

The contract is with BBY Services India LLP, the technology arm of the American retailer. TCS will provide large-scale technology services under the deal.

The win is a major boost for India's IT sector. Large deals have been harder to come by as global clients cut spending.

TCS is India's largest IT services company. The deal strengthens its position in the retail technology space.

The announcement comes days before TCS reports its September-quarter results on October 8. Investors will look for details on the deal's timeline.

Analysts say the contract could run for several years. It may also open the door to more large deals in the coming quarters.

TCS announced the deal through an official press release. Large contracts like this usually run for several years. They involve thousands of engineers working on digital and cloud projects. The win comes as global clients restart big technology spending. TCS hopes it will lead to more such deals.