In Southern India, Telangana's capital Hyderabad is located on the bank of the river Musi. Hyderabad and Sikun Hussain are "twin cities" near Sagar Lake (also known as tank bund in the local Paral), but both cities have grown so much that they have now become a large metropolis. The Hyderabad district is completely included within the Ranga Reddy district of Telangana. Several outskirts of Hyderabad were recently merged into the city, which is now called Greater Hyderabad. This city is rich in history and tradition, Hyderabad now competes with Bangalore and Chennai for the crown of India's IT capital. The Indian headquarters of Microsoft, Amazon, and Google are here.