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Course Instructor: Ashish Revar

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Cloud Computing Fundamentals and Architecture
LearnCloudUnit 16

Topic 1.6 of Cloud Computing Fundamentals and Architecture

Cloud Migration Strategies: The 6R Framework

The six migration strategies — Rehost, Replatform, Repurchase, Refactor, Retire, Retain — and how each changes the security posture, responsibility, and compliance risk of a workload.

~25 min total·4 quadrants of structured content

By the end of this topic, you will

  • Describe each of the 6R migration strategies with a real-world example
  • Map the security implications of Rehost vs Refactor migrations
  • Apply MeitY Cloud Policy 2023 constraints to a government workload migration decision
  • Identify the data sanitisation requirements for the Retire strategy
Q1 · E-TUTORIAL (1)Q2 · E-CONTENT (1)Q3 · WEB RESOURCES (13)Q4 · SELF-ASSESSMENT (2)

Quadrant 1 · e-Tutorial

Video lectures and walkthroughs

Quadrant 2 · e-Content

Articles and case studies

cloud-security

Cloud Migration Strategies: The 6R Framework and Security Implications

Gartner's 6R strategies — Rehost, Replatform, Repurchase, Refactor, Retire, and Retain — each carry a distinct security posture, migration risk, and compliance consideration relevant to the Indian enterprise context.

16 min read

Quadrant 3 · Web Resources

Downloadable material and curated external links

Downloadable reference material

EBook

Cloud Security — eBook

v2026

Open resource

Cheatsheet

Cloud Security — Cheatsheet

v2026

Open resource

MCQ Bank

Cloud Security — MCQ Bank

v2026

Open resource

Question Bank

Cloud Security — Question Bank

v2026

Open resource

Featured Podcast

Podcast Episode

Tech Talk EP 07 — The Hypervisor Is Your True Security Perimeter

Audio deep-dive covering NIST SP 800-145, the SPI stack, shared responsibility, deployment models, Type-1/2 hypervisors, and Spectre/Meltdown side-channel attacks. ~30 min.

Listen now

External links

AWS 6 Strategies for Migrating to the Cloud

The original AWS enterprise strategy post defining the 6R framework.

AWS 6 Strategies for Migrating to the Cloud

The original AWS enterprise strategy post defining the 6R framework.

MeitY Cloud Service Policy 2024

Indian government cloud adoption policy covering classification and empanelment.

MeitY Cloud Service Policy 2024

Indian government cloud adoption policy covering classification and empanelment.

NIST Cloud Computing Reference Architecture SP 500-292

NIST cloud reference architecture used as basis for migration planning.

NIST Cloud Computing Reference Architecture SP 500-292

NIST cloud reference architecture used as basis for migration planning.

AWS Migration Hub Documentation

AWS Migration Hub tracks and manages application migration progress.

AWS Migration Hub Documentation

AWS Migration Hub tracks and manages application migration progress.

Quadrant 4 · Self-Assessment

Test your knowledge — earn a certificate on first pass

Foundations of Cloud Computing

NIST SP 800-145, service models, deployment models, shared responsibility, virtualisation, and migration strategies.

20 questions30 minPass: 60%

Cloud Security: Complete Assessment

Comprehensive 120-question assessment covering all six chapters of the Cloud Security eBook 2026.

120 questions120 minPass: 60%