The city of Ambarnath, in the Indian state of Maharashtra, is also a part of the Mumbai Metropolitan Region. It falls within the territorial boundaries of the Thane district. The city is often spelled as Ambernath. The name Ambarnath translates to the Lord of the Sky and refers to Lord Shiva. The city is the site of an old temple dedicated to Lord Shiva, from 1060 AD. Like all suburbs of Mumbai, the railway track divides the city of Ambarnath into Ambarnath East and Ambarnath West. Ambarnath west has developed as an industrial zone and it has numerous small and large chemical factories. The government of India has set up an Ordnance Factory in the region, which is slowly developing a residential neighborhood in the area. There is a large safety matchstick manufacturing facility of WIMCO is located in this region along with more than 150 large-scale industries such as textile, aerospace, chemicals, edible goods and electrical hardware. Ambarnath East is mostly a residential area. The famous Shiva temple is located in Ambarnath East along with several residential and sporting complexes.
The City Union Bank was incorporated in the year 1904. In the year 1990, the bank has introduced computerization, and all the branches were computerized. The bank had an agreement with TCS for entering the Core Banking Solutions. The City Union Bank has installed ATMs at selected centers from where the users could check their account balance, withdraw cash and obtain account statements. The City Union Bank attained a license from the IRDA for selling insurance products and providing other value-added products. The bank entered into memorandum with LIC for selling insurance products. To function as a depository participant, the bank obtained the license under National Securities Depository Limited. The digital banking services of City Bank Union consists of Chatbot facility or Ask Lakhshmi, Passbook printing kiosk, Internet and mobile banking, CUB Virtual Credit Card facility and Cheque clearing kiosk. In 2016-17, it was awarded as the IRDBT Banking Technology Excellence Award of the year for cybersecurity and defense among the small banks.