How to Successfully Migrate to SharePoint Online from File Shares, On-Premise, or Third-Party Platforms

Migrating your organization's documents to SharePoint Online is a strategic move toward cloud efficiency, improved collaboration, and modern workplace infrastructure. Whether you're coming from file shares, on-premises SharePoint, or a third-party system, the process requires more than simply moving files — it demands structure, security, and user experience planning.

This guide walks you through the key steps, tools, and best practices for a successful SharePoint Online migration — and how HarjTech helps ensure the transition is smooth, scalable, and aligned with your business goals.

Step-by-Step: The SharePoint Online Migration Process

1. Assess Your Current Environment

Start by taking a full inventory of:

  • Current file share folders, libraries, or third-party systems
  • Permissions and access control models
  • File volume, types, and metadata

Document what needs to be migrated, archived, restructured, or excluded.

2. Design the Target SharePoint Architecture

This isn’t a lift-and-shift. SharePoint Online’s flat architecture means you don’t nest folders inside folders inside folders.

  • Use Site Collections instead of deep sub-sites
  • Organize by function or department (e.g., HR, Sales, Projects)
  • Avoid replicating messy file share hierarchies

3. Decide on SharePoint vs. Teams-Centric Access

Your environment can be structured in two primary ways:

  • SharePoint-Centric: Ideal when content is more structured, document-heavy, or controlled by a small number of site owners.
  • Teams-Centric: Ideal for collaboration-heavy environments where Teams is the interface and SharePoint is used behind the scenes.

Make this decision early — it impacts how users interact with content.

4. Plan Permissions Carefully

Legacy systems often have overly complex or broken permission models. Now is your opportunity to implement a cleaner, more scalable structure.

Best Practices:

  • Use Microsoft 365 Groups and security groups — not individual permissions
  • Avoid item-level permissions where possible
  • Apply permissions at library or site level, not folders
  • Implement role-based access tied to departments or functions

Key Considerations When Moving to SharePoint Online

1. Structure Matters

A flat site architecture means fewer nested folders and more reliance on metadata, views, and filters.

  • Use document libraries, content types, and custom columns
  • Replace deep folder paths with filtered views
  • Design for search, not navigation

2. Navigation Is Critical

Users won’t adopt what they can’t find.

  • Build a global navigation menu using SharePoint Hub Sites
  • Use Quick Links, mega menus, and site home pages to guide users
  • Design navigation by function, not just by department

Tools That Support a Smooth Migration

ShareGate

One of the most powerful tools for SharePoint migrations. ShareGate allows you to:

  • Run pre-migration assessments
  • Map metadata and permissions
  • Perform delta migrations (only moving what's changed)
  • Maintain version history and file integrity

This reduces downtime and ensures day-to-day operations are unaffected.

PowerShell + PnP Scripts

Use automation to:

  • Create sites and document libraries in bulk
  • Apply templates and permission models
  • Set default metadata and folder structures

PowerShell is especially useful for large-scale migrations or multi-site deployments.

Best Practices for Migration Success

  • Clean before you move: Archive unused files and flatten deep folder structures
  • Pilot the migration: Test one department or use case before full rollout
  • Train users: Don’t just hand them new links — show them how it works
  • Monitor post-migration adoption: Use Microsoft 365 usage reports to identify drop-offs and support needs

How HarjTech Helps You Migrate with Confidence

Migrating to SharePoint Online can seem complex — but HarjTech makes it simple.

We help small businesses and enterprise organizations:

  • Plan the right architecture and governance model
  • Audit existing environments and design the migration roadmap
  • Automate site and permission setup using PowerShell
  • Use ShareGate and Microsoft tools to migrate with zero disruption
  • Deliver a complete post-migration support package

We’ve supported federal clients, provincial bodies, and private enterprises — with a proven process, clean documentation, and tailored governance models.

Conclusion

Migrating to SharePoint Online is more than just a technical project. It’s an opportunity to modernize how your business organizes, secures, and collaborates on information.

By following best practices in structure, permissions, automation, and user experience — and with the right partner by your side — you can ensure your migration leads to long-term success.

Ready to make the move to SharePoint Online? HarjTech is here to help.

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