The document discusses mergers and provides details about the merger between HDFC Bank and Centurion Bank of Punjab in 2009. It was one of the largest mergers in the banking sector in India. The merger added 394 branches and 19% more assets to HDFC Bank. It increased HDFC Bank's network making it the largest private bank in India. The merger provided synergies around products, management expertise, and geographic expansion. However, HDFC Bank had to write-off Rs. 70 crores to harmonize accounting policies between the two banks.