RBI Domain Migration| Zero Downtime for India's Largest Private Bank

Project Type

End-to-End Domain Migration for Pvt. Bank

Tech Stack

Nginx
AWS
KeyCloak
Large private bank / Global scale

About the Client

The largest private sector bank in India. It is considered to be one of the 10 most valuable banks globally. They serve millions of retail and enterprise customers. The bank processes trillions of transactions daily and operates within a highly regulated RBI compliance framework, requiring a seamless domain migration strategy.

Overview

The Reserve Bank of India mandated Indian banks to transition from .com domains to sovereign .in domains. The goal for the mandate was to ensure trust and data sovereignty.The migration timeline overlapped with the client’s pre-Diwali code freeze, a period where system changes are typically restricted due to peak festive transaction volumes. Any disruption during this period could have directly impacted festive transaction volumes, customer trust, and regulatory compliance, making zero downtime a non-negotiable requirement.
100+Migration of Partner Integrations
100%Regulatory Compliance Adherence
0%Customer Disruption and Downtime

BUSINESS REQUIREMENT

The main requirement was to transition the primary digital architecture from the .com TLD (Top-Level Domain) to the sovereign .in TLD in strict accordance with the Reserve Bank of India (RBI) mandate.The primary goals are to enhance data sovereignty, bolster national cybersecurity infrastructure, and fortify customer trust.Key Requirements1. Migrate from .com to .in as per the RBI mandate2. Ensure zero downtime during the peak festive season3. Maintain SEO ranking and user bookmarks4. Update 100+ partner integrations5. Secure infrastructure, firewall, SSL updates6. Execute within code freeze constraints

OUR SOLUTION

We designed a Zero-Downtime Migration Framework executed through controlled off-peak deployment windows. The framework balanced regulatory urgency, enterprise security controls, and business continuity during one of the highest transaction periods of the year.Deployment was executed during 2:00 AM – 5:00 AM maintenance windows, supported by a 24/7 war-room monitoring setup.
The architectural audit evaluates more than 100 partner integrations to ensure system integrity and performance. This process segments high-risk domains, specifically targeting Loan and Expressway traReprovisioned SSL certificates and updated WAF rules, ingress whitelisting, and multi-layer firewall configurations to securely recognize and route traffic to the new domain.The team executed the domain switch during controlled off-peak windows. This process utilized real-time monitoring and maintained constant rollback readiness to prevent service interruptions.The implementation of 301 redirects preserved search rankings throughout the transition. This method ensured all user bookmarks transitioned seamlessly without loss of traffic or page authority.The team validated RBI compliance and security posture across all partner ecosystems. This process ensured transaction stability within the integrated network and verified adherence to regulatory mand

CHALLENGES IN EXECUTION & SOLUTIONS

Faced with a rigid RBI deadline overlapping the festive code freeze, the bank required a transition to a sovereign domain without disrupting peak transaction volumes or 100+ partner integrations. We executed a Zero-Downtime Migration Framework during off-peak maintenance windows, supported by a 24/7 war room and a comprehensive architecture audit to pre-configure firewalls and SSL certificates. By decoupling the domain switch from core application changes and implementing a robust 301 redirect and SEO strategy, we ensured a seamless transition to the .in domain that preserved customer trust and prevented phishing vulnerabilities.
Requirement Gathering
Frequent change requests (CRs)
Cross-team coordination within short sprints
Scope variations during execution

OUR APPROACH

Our approach centered on a Zero-Downtime Migration Framework that decoupled the domain transition from core application updates to bypass festive code freeze restrictions. We conducted a comprehensive architecture and partner audit to identify and pre-configure security dependencies for over 100 external integrations, including WAF rules and SSL certificates. The actual deployment was executed during off-peak maintenance windows, supported by a 24/7 war room for real-time monitoring and immediate rollback readiness.

Comprehensive Partner & Architecture Audit

The architectural audit evaluates more than 100 partner integrations to ensure system integrity and performance. This process segments high-risk domains, specifically targeting Loan and Expressway transaction flows, to mitigate operational threats. The audit identifies critical dependencies across Search Engine Optimization (SEO) configurations, Cross-Origin Resource Sharing (CORS) policies, and firewall rules to prevent service disruptions and unauthorized access
Comprehensive Partner & Architecture Audit

Security & Infrastructure Reconfiguration

Reprovisioned SSL certificates and updated WAF rules, ingress whitelisting, and multi-layer firewall configurations to securely recognize and route traffic to the new domain.
Security & Infrastructure Reconfiguration

Zero-Downtime DNS Switch

The team executed the domain switch during controlled off-peak windows. This process utilized real-time monitoring and maintained constant rollback readiness to prevent service interruptions.
Zero-Downtime DNS Switch

SEO & Traffic Preservation

The implementation of 301 redirects preserved search rankings throughout the transition. This method ensured all user bookmarks transitioned seamlessly without loss of traffic or page authority.
SEO & Traffic Preservation

Compliance & Stabilization

The team validated RBI compliance and security posture across all partner ecosystems. This process ensured transaction stability within the integrated network and verified adherence to regulatory mandates.
Compliance & Stabilization

RESULTS

The project concluded with zero business loss, proving that even high-stakes sovereign transitions can be executed flawlessly—provided they are backed by rigorous planning and an unwavering focus on infrastructure resilience.This migration stands as a benchmark for Zero-Disruption Infrastructure Management. By decoupling the domain transition from core application changes, the bank protected its most critical revenue window while reinforcing its commitment to national data security.
100+Migration of Partner Integrations
100%Regulatory Compliance Adherence
0%Customer Disruption and Downtime

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RBI Domain Migration Case Study | Zero Downtime for India's Largest Private Bank - GeekyAnts