RBI Domain Migration| Zero Downtime for India's Largest Private Bank
Project Type
End-to-End Domain Migration for Pvt. Bank
Tech Stack
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.
Migration of Partner Integrations
Regulatory Compliance Adherence
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 Requirements
1. Migrate from .com to .in as per the RBI mandate
2. Ensure zero downtime during the peak festive season
3. Maintain SEO ranking and user bookmarks
4. Update 100+ partner integrations
5. Secure infrastructure, firewall, SSL updates
6. Execute within code freeze constraints
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.
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
1
Frequent change requests (CRs)
2
Cross-team coordination within short sprints
3
Scope variations during execution
4
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
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.
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.
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.
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.
PROJECT
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.
Migration of Partner Integrations
Regulatory Compliance Adherence
Customer Disruption and Downtime
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