The city of Thrissur in the Indian state of Kerala was originally known as Thiru Siva Peroor. It is more commonly known by its anglicised name Trichur. It is the fifth largest city in Kerala as well as the third largest urban agglomeration in the state. The city functions as the headquarter of the Thrissur District. The city of Thrissur has developed around a 65-acre hillock known as the Thekkinkadu Maidan which houses the famous Vadakkumnathan temple. Thrissur used to be the capital of the Kingdom of Cochin in olden days. Thrissur is known for its cultural, spiritual and religious leanings throughout history and hence often referred to as the Cultural Capital of Kerala. Thrissur a major financial and commercial hub of the state, dotted with thriving Malayali entrepreneurs. The city is known for its financial capabilities which predominantly fuels the economy. Thrissur has the headquarters and offices of almost all the banks registered under RBI, thus earning it the nickname of the "Banking town." Thrissur is also gradually emerging as the largest center for Ayurvedic drug manufacturing industry with more than 150 manufacturing units within the city. Modern retailing has also become a big business and revenue earner in Thrissur. Jewelry and textile retailing occupy a major part of Thrissurs retailing business. Famous jewelry groups like Kalyan Group, Joyalukkas, Jos Alukka & Sons, etc. have their bases in the city and provide employment opportunities to a lot of residents.
IOB based in Chennai, is a public sector bank with almost 3400 domestic branches, including 1150 branches in Tamil Nadu, and eight offices in overseas as of 31 October 2017. An ISO certified in-house Information Technology department, which had developed the software used by IOB to provide online banking to customers earlier. The IOB had a network of around 3300 ATMs across India, as of 2016. The branches of IOB are in Singapore, Bangkok, Colombo, Seoul. The representative offices of IOB are in Guangzhou, Dubai, and Vietnam. In 1937, the Indian Overseas Bank (IOB) was established by Thiru.M. Ct. M. Chidambaram Chettyar for encouraging foreign exchange operations and overseas banking. IOB opened a representative office each in Guangzhou, China, and Kualalampur. IOB opened other Representative offices in Dubai and the United Arab Emirates in the year 2009. In 2015, IOB launched m Passbook applications and new mobile banking services. The Apollo Munich Health Insurance has tied up with IOB to serve specialized health and personal accident products to its customers.