Case Studies

M365 Migration

Enabling a Dedicated Environment from Shared Enterprise Infrastructure via Microsoft 365 Migration

Overview

A global automobile manufacturer was restructuring one of its business units to operate independently. This unit, with close to 900 users, was tied to the parent company’s Active Directory forest and Microsoft 365 tenant. This slowed down decision-making and provided limited control over identity and access. Hence, they partnered with Krish for a smooth migration program, i.e., a full Microsoft 365 tenant-to-tenant migration.

Client Background

Our client is a business unit of a large multinational automotive enterprise that comprises a large employee base who work together across various departments, such as operations, engineering, and corporate responsibilities. Their daily operations relied on enterprise email, team collaboration tools, centralized identity management, and SharePoint document management.

Challenges

  • Risk of Business Disruption During Separation: Moving out of a shared Active Directory forest created a real risk of downtime, directly threatening ongoing operations and workforce productivity.

  • Uncertainty Around User Access: User identities, permissions, and access could break across environments, potentially locking employees out of systems and delaying business operations.

  • Risk of Communication Breakdown: Email, Teams, and SharePoint migration raised concerns of inefficient communication, slowed coordination, and disturbed delivery timelines.

  • Fear of Data Loss: Any data loss or mismatch during migration could impact compliance, audit readiness, and leaders’ visibility.

Solutions

  • Mapped Business Dependencies: Assessed AD structure, Azure AD Connect sync, and Microsoft 365 workloads to identify risks related to user access.
  • Design Built for Clean Separation: Designed a new domain and Microsoft 365 tenant, using ADMT-based migration, SID history, and Azure AD Connect to keep everything running smoothly for users.
  • Validation Through Pilot Version: Migrated a small user group, including mailboxes, Teams, and SharePoint data, using AvePoint Fly to test access, communication, and collaboration workflows.
  • Phased Migration Across Workload: Moved users, devices, emails, files, and collaboration tools in batches to maintain system availability and avoid operational downtime.
  • Validation and Stabilization Post-Migration: Verified user access, email flow, file availability, etc., in AD, Exchange, Teams, and SharePoint to ensure the business operated smoothly in the new setup.

Tech Stack

  • ADMT (Active Directory Migration Tool)
  • AvePoint Fly
  • Microsoft 365 (Exchange, SharePoint, Teams)
  • Active Directory
  • Azure AD Connect Tool

Business Value Propositions

  • Complete Data Integrity: Migrated with 100% integrity, ensuring compliance and reporting accuracy.
  • Zero Disruption Throughout Migration: Migration executed with near-zero disruption, keeping business operations running.
  • Secure and Consistent User Access: Maintained secure authentication and uninterrupted workflows.
  • Stronger Control and Governance: Better visibility and control over users, data, and policies.
  • Better Security Foundation: Reduced identity-related risks by over 60%, improving overall security posture and minimizing exposure to unauthorized access.

Final Perspective

Krish Services carried out a planned migration of large number of users between environments, ensuring a safe identity transfer and continuous cooperation.

This boosted operational control, increased governance, and put the business unit in a position to operate business flexibly. The company is now prepared to handle upcoming expansion plans, improve security, and streamline operations.

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