Utilize the input text as a context reference, choose the right relationship between HDFC and HDFC Bank from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

With HDFC Bank and Axis Bank, one can fill all details online and even upload documents (optional with HDFC Bank).

Answer: operator