A Majority of large Indian banks use Finacle for their core banking. It's specifically marketed by Infosys as a replacement for legacy mainframe systems and can

A Majority of large Indian banks use Finacle for their core banking. It's specifically marketed by Infosys as a replacement for legacy mainframe systems and can be deployed on AWS: https://www.infosys.com/services/cloud-cobalt/insights/finacle-banking-suite.html https://www.infosys.com/services/cloud-cobalt/insights/finac... Infosys marketing copy for the GST portal talks about leveraging opensource building blocks: https://www.infosys.com/services/application-modernization/case-studies/centralized-administration-platform.html https://www.infosys.com/services/application-modernization/c... My Google-fu is failing me, you might have better luck searching for specifics about Finacle.