AWS Cloud Migration for Indian Enterprises: The 7 Rs Framework with Real Examples
Cloud migration is not a single action — it is a strategic decision for every application in your portfolio. AWS's 7 Rs framework gives Indian enterprise CIOs a structured way to evaluate and execute migration at scale.
Why Cloud Migration Is Accelerating in India in 2026
India's cloud adoption among enterprises has reached an inflection point in 2026. Three regulatory and market forces are converging to accelerate migration: the Digital Personal Data Protection (DPDP) Act pushing enterprises to formalise data governance; Digital India 2.0 government initiatives creating cloud-first mandates across PSUs and government suppliers; and the cost pressure of maintaining ageing on-premise infrastructure as hardware refresh cycles become economically unsustainable.
AWS remains the dominant cloud provider for Indian enterprise workloads, with data centres in Mumbai and Hyderabad providing sub-10ms latency for most Indian business applications and data residency compliance for DPDP Act obligations.
Key Insight: Cloud migration is not one decision — it is hundreds of decisions, one per application. The 7 Rs framework ensures each application gets the right migration strategy, not a one-size-fits-all approach that creates cost and complexity.
The AWS 7 Rs Framework Explained with Indian Enterprise Examples
1. Rehost (Lift and Shift)
Move applications to AWS EC2 with no code changes. Fastest migration path. Typical cost saving: 20–30% on infrastructure within 12 months.
India Example: A Mumbai-based NBFC migrated 40 on-premise servers to AWS EC2 in 6 weeks, reducing data centre opex by ₹1.2 crore annually.
2. Replatform (Lift, Tinker and Shift)
Move to AWS with minor optimisations — e.g., move database from on-premise Oracle to Amazon RDS Oracle, or switch from on-premise Tomcat to AWS Elastic Beanstalk. No core code changes.
India Example: A Delhi manufacturing company moved its MES application database to Amazon RDS, eliminating DBA overhead and reducing patching cycles from quarterly to automatic.
3. Repurchase (Drop and Shop)
Replace the existing on-premise application with a SaaS product. Common for CRM (Zoho or Salesforce), HCM (Oracle Fusion HCM), and ERP (NetSuite or Oracle Fusion Cloud).
India Example: A Pune IT company replaced its on-premise SAP HR system with Oracle Fusion HCM Cloud, cutting HR IT costs by 45% in year two.
4. Refactor / Re-Architect
Redesign the application to be cloud-native — microservices, containers (ECS/EKS), serverless (Lambda). Highest effort but maximum long-term agility and cost efficiency.
India Example: A Bengaluru fintech refactored its monolithic loan origination system into AWS Lambda microservices, reducing per-transaction compute cost by 70%.
5. Relocate (Hypervisor-level lift and shift)
Move VMware workloads to AWS VMware Cloud on AWS without changing the hypervisor layer. Fastest path for large VMware estates.
India Example: A Hyderabad pharma company with 200 VMware VMs relocated to AWS within 8 weeks using VMware HCX with zero application downtime.
6. Retain (Revisit)
Keep certain applications on-premise — typically those with regulatory data localisation mandates, latency-critical manufacturing systems, or near end-of-life applications not worth migrating.
India Example: A Chennai bank retained its core banking system on-premise due to RBI data localisation norms, while migrating all analytics and reporting to AWS.
7. Retire (Decommission)
Switch off applications that are no longer needed. Typically 10–20% of enterprise application portfolios are candidates for retirement during cloud migration assessment.
India Example: A Mumbai logistics company retired 12 legacy reporting applications after discovering all their reports were available natively in their new cloud ERP.
DPDP Act and Cloud Migration: What Indian Enterprises Must Check
India's Digital Personal Data Protection Act creates specific obligations for cloud migrations involving personal data of Indian citizens:
- Data Fiduciary obligations: Enterprises processing personal data must ensure AWS regions used comply with permitted cross-border transfer rules under DPDP Act.
- Data localisation for sensitive sectors: RBI, SEBI, IRDAI, and NHA have specific data localisation requirements that may restrict certain workloads to AWS Mumbai/Hyderabad only.
- Consent management: Cloud-hosted customer data platforms must support DPDP-compliant consent collection and withdrawal workflows.
- Right to erasure: Cloud storage architecture must support deletion of all copies of personal data across primary, backup, and replica storage when a data principal exercises erasure rights.
Oracle ERP on AWS: A Common Indian Enterprise Scenario
A large number of Indian enterprises run Oracle EBS or Oracle Fusion Cloud and want to migrate supporting workloads — reporting, analytics, data warehousing, custom applications — to AWS. Common patterns include:
- Oracle EBS on AWS EC2 with RDS for Oracle database (Rehost/Replatform)
- Oracle Fusion Cloud natively on Oracle Cloud Infrastructure with AWS for adjacent workloads
- Oracle APEX applications migrated to AWS RDS Oracle or OCI Autonomous Database
- BI and analytics migrated from on-premise Oracle OBIEE to AWS QuickSight or Redshift
Planning Your AWS Cloud Migration in India?
ROSTAN Technologies is an AWS Partner and Oracle Gold Partner. We deliver end-to-end cloud migration assessments, 7 Rs application portfolio analysis, DPDP Act compliance reviews, and managed migration services for Indian enterprises.
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