New Delhi (CNN Business) Amazon just opened its biggest office building in the world in the Indian city of Hyderabad.

The online retail giant's new campus in the city's financial district opened on Wednesday. It covers 9.5 acres and has 1.8 million square feet of office space, making it "Amazon's single largest building in the world in terms of total area," according to the company.

The building can accommodate up to 15,000 employees, nearly a quarter of Amazon's full-time India workforce of more than 62,000. The company also has 155,000 contract workers in the country, making India its biggest base outside the United States.

The Hyderabad campus is the first office outside the United States that Amazon fully owns.

The new Amazon office buildings in Hyderabad can accommodate up to 15,000 employees.