HDFC Bank’s clear technology taxonomy

Reported by: |Updated: October 29, 2018

Munish Mittal, CIO and group head-IT, HDFC Bank, says the bank is now preparing to adopt technologies of the future. In an interaction with Banking Frontiers, he says he would prefer to divide these into two:

“The first is hygiene technologies. Here, we are talking about scale. We do over a billion and half transactions in a month, out of which ~85% are digital. These have to be persisted in a system of records and availability of information means a lot to us. We are therefore investing heavily in building the next generation of scale such as infrastructure scale, cloud scale, internet scale, infinite scale. We have begun our journey of agile with adoption of DevOps and technologies like Dockers and Kubernetes to build infinite scale. Similarly, elasticity is required to expand and collapse depending on workloads and seasonality. The period from Janmashtami to Diwali is the highest consumption period for consumer durables, auto loans, etc. Handling this would require a scale up from 2500 to 5000 to 10,000 transactions per second. And this would need adoption of technologies like cloud, Dockers, Kubernetes, etc. We are rewriting our applications to be cloud native.”

He continues: “The second is availability. At HDFC Bank, we are all obsessed with availability. Illustratively, we have invested on running our RTGS application in Active-Active mode from across 2 data centers. We have about 18% RTGS volume across the country. As much as roughly 36% of the country’s daily money settlement payments processing passes though HDFC Bank and another bank. We need to be highly available. We have worked with IFTAS/IDRBT and reengineered the RTGS system. For core banking, we have a 3-way DR between the primary site, the DR site and the near site. We are investing a lot in our DR/BCP practice to ensure zero data loss for core banking – perhaps the only Indian bank today running zero RPO on Core banking from DR/BCP perspective.”