Why SharePoint is the Backbone of File Management in Microsoft 365

Why it’s the backbone of file storage in Microsoft 365

If OneDrive is your personal workspace, Microsoft SharePoint is your team’s workspace, and your organisation’s workspace. It’s where files that matter to more than one person should live. Think of it as the “single source of truth” for projects, policies, shared knowledge, and collaborative work that needs to outlast any individual’s involvement.

Many people significantly underestimate SharePoint, mainly because they tend to interact with it indirectly. They access files through Teams channels, click SharePoint links sent in emails, or open documents from search results without ever seeing the full library structure behind them. This indirect exposure means they never truly understand what SharePoint is, what it’s designed to do, or why it matters.

This lack of understanding has consequences. When people don’t grasp SharePoint’s purpose and capabilities, organisations end up with file chaos, including duplication across multiple locations, lost information that no one can find, broken links that lead nowhere, and constant confusion about which version of a document is current.

In this article, Mark Finney, Co-Founder and Facilitator at Keystroke Learning explores SharePoint’s core purpose, how to structure it effectively, how to manage permissions sensibly, and how to avoid the most common mistakes that undermine its effectiveness. By the end, you’ll have a better understanding of why SharePoint is the backbone of file management in Microsoft 365 and how to use it confidently.

The Core Purpose of SharePoint

Before we get into features, structure, and best practices, you need to understand the fundamental purpose SharePoint is designed to serve.

SharePoint exists to store files that:

• Belong to a team, department, or project—not a single person
• Need long-term stability and consistent access regardless of staff changes
• Should remain accessible even if someone leaves your business
• Serve as authoritative versions that teams rely on
• Require controlled, managed access with appropriate permissions

Put simply: Anything your team relies on belongs in SharePoint, not in someone’s OneDrive.

This isn’t just a technical distinction or organisational preference. It’s about ensuring business continuity, maintaining institutional knowledge, and preventing the loss of critical information when people change roles or leave the company.

What Belongs in SharePoint

Understanding what types of files belong in SharePoint can help you to consistently make the right storage decisions:

Policies, procedures, and HR documents. These resources are typically organisation wide, so they need permanent, accessible homes where everyone who needs them can find them. They define how your organisation operates and can’t be tied to any individual’s account.

Team templates and resources. Shared templates, style guides, brand assets, standard forms, and reference materials that multiple people use regularly belong in SharePoint so they’re consistently available and properly version controlled.

Project files that multiple people update or refer to. When several team members need ongoing access to work together on files, SharePoint should be the foundation for that collaboration. Project plans, requirements documents, design files, and working documents all belong here.

Client-facing documents that need controlled access. Proposals, contracts, deliverables, reports, and other materials for external stakeholders should live in SharePoint where access can be managed carefully and consistently.

Final reports or completed deliverables. Once work moves from draft to approved status, SharePoint becomes its permanent home as the authoritative version everyone should reference.

The key point: If a file matters beyond just you, for example, if other people need it, reference it, or rely on it, then SharePoint is the safer, more reliable home.

SharePoint Libraries for File Organisation

SharePoint uses document libraries as its primary storage mechanism. Understanding how libraries work is essential to using SharePoint effectively.

Think of a document library as a dedicated folder system designed for team collaboration. Each library can contain:

Folders that work like traditional filing cabinet drawers, providing hierarchical organisation that most people find intuitive and familiar.

Metadata—tags, categories, or custom properties that allow more sophisticated search, filtering, and automated organisation beyond what folders alone can provide.

Version history that automatically tracks every change, keeping a complete record of edits so you can review previous versions, track who changed what, and recover from mistakes.

Permissions that can be set at the library level, folder level, or even individual file level, giving you granular control over who can view, edit, or manage content.

Why Structure Matters

Many organisations approach SharePoint with good intentions and questionable execution. They create elaborate folder hierarchies five or six levels deep, implement complex metadata schemes with dozens of required fields, and design intricate permission structures that require flow charts to understand.

It looks professional, and it seems thorough. Right up until it backfires spectacularly:

• Users struggle to find files because the organisational logic made sense to the person who designed it but doesn’t match how the team thinks about their work
• Permissions become confusing with different rules at different levels, leading to constant “access denied” frustrations
• Maintenance becomes a burden requiring dedicated administrators just to keep the structure functional
• Adoption fails because the system is too complicated for daily use, so people work around it

The better approach: Keep things deliberately simple, especially when you’re starting out.

Use simple top-level folders that match how your team works in the real world. Examples might include Projects, Templates, Policies, Client Work, or Resources. Avoid the temptation to create folders for every conceivable category from the beginning.

Apply descriptive names to subfolders that clearly communicate what lives inside them. “2026 Marketing Campaigns” is better than “Marketing 2026” which is better than “Mktg_26.”

Avoid deep nesting whenever possible. If you find yourself creating folders more than three or four levels deep, that’s usually a signal that your structure has become too complicated. Consider whether metadata might work better than additional folder levels.

Take Advantage of SharePoint’s search capabilities rather than creating endless folders. Modern search is remarkably powerful, which means you can often find files faster by searching than by navigating elaborate folder trees.

Ownership and Collaboration: The SharePoint Advantage

This is where SharePoint fundamentally differs from OneDrive, and understanding this distinction is critical.

In SharePoint, ownership is shared or organisational rather than individual. This changes everything about how files persist, how access is managed, and how collaboration works.

Unlike OneDrive:

• Files don’t rely on an individual’s account for their continued existence
• Permissions are set at site, library, folder, or file level according to team needs
• Teams or groups can have read, edit, or full control without depending on personal sharing
• Files remain accessible and manageable even when someone leaves the organisation

This solves one of the biggest structural problems with OneDrive: the risk that important files disappear or become inaccessible when their owner leaves, changes roles, or simply forgets they shared something months ago.

How to Think About SharePoint Ownership

Think of SharePoint as “the organisation’s filing cabinet.” Just as a physical filing cabinet in an office belongs to the organisation rather than any individual employee, SharePoint libraries belong to teams or departments, not to specific people.

Ensure the correct groups have appropriate access. Rather than granting permissions to individuals one at a time, use groups that represent roles or teams. This makes permission management sustainable as people join, leave, or change roles.

Avoid giving individual users excessive permissions unless absolutely necessary. When someone needs special access, ask whether others in their role should have the same access. If so, adjust group permissions rather than creating individual exceptions.

Practical scenario: Your HR team has a SharePoint library for company policies. Instead of individually granting access to each employee, you configure permissions so:

• All employees have read access to view policies
• The HR team group has edit access to update policies
• HR leadership has full control to manage the library structure

When someone joins the company, they automatically get policy access because they’re added to the all-employees group. When someone joins HR, they get edit access through the HR team group. No individual permission grants are needed.

Versioning and Co-Authoring: Collaboration Without Chaos

SharePoint’s versioning and co-authoring capabilities transform how teams work together on documents, making collaboration smoother and safer than managing separate copies in individual OneDrive accounts.

How Version History Protects Your Work

Every time someone saves changes to a document in SharePoint, the system automatically creates a new version while preserving all previous versions. This happens automatically in the background, so you don’t have to remember to save copies or create backups. In fact, you shouldn’t save copies or create backups!

Why this matters:

Recovery from mistakes. If someone accidentally deletes critical content, overwrites important information, or makes changes that later prove problematic, you can easily restore any previous version. The ability to undo disasters without permanent data loss is invaluable.

Audit trail. You can see exactly who changed what and when. This isn’t about surveillance; it’s about understanding how documents evolved and being able to answer questions about when specific changes were made.

Comparison capability. You can compare versions side-by-side to see exactly what changed between them, which is tremendously useful when reviewing edits or trying to understand why something was modified.

Elimination of version chaos. You don’t need multiple files named “Report_v1,” “Report_v2,” “Report_Final,” and “Report_Final_ACTUALLY_USE_THIS_ONE.” (This happens more than you would think)! Instead, there’s one file, with a complete history of all versions.

How Co-Authoring Enables Real-Time Collaboration

SharePoint supports real-time co-authoring, meaning multiple people can work on the same document simultaneously. You see each other’s changes as they happen, with indicators showing who’s editing which sections.

This capability fundamentally changes collaboration dynamics:

No more waiting for turns. Team members don’t need to coordinate who has the file “checked out” or wait for someone to finish before they can make their contributions. (Although SharePoint does have options for checking documents out and in, but that’s a conversation for another day).

Reduced version conflicts. Because everyone works on the same file rather than separate copies, you eliminate the nightmare of trying to merge changes from five different versions that people worked on independently.

Faster completion. Projects move forward more quickly when multiple contributors can work simultaneously rather than sequentially.

Real-world example: Your team is collaborating on a client proposal with a tight deadline. The project manager outlines the approach, the technical lead adds implementation details, the designer describes the creative concept, and the account manager refines the business case, all working simultaneously in the same document stored in SharePoint. Changes appear in real-time for everyone, comments can be used for quick questions and clarifications, and the proposal comes together efficiently without version conflicts or coordination overheads.

Compare this to the alternative: creating separate copies, editing independently, then spending hours trying to merge everyone’s changes back together while hoping nothing important gets lost or conflicted in the process.

Common SharePoint Mistakes and How to Avoid Them

Even experienced users and well-intentioned teams make predictable mistakes with SharePoint. Understanding these patterns helps you avoid them.

Mistake 1: Treating SharePoint Like OneDrive

Some folks like upload files to SharePoint but never organise them properly, treating it like a dumping ground rather than a structured library. They expect “everyone will just find them somehow,” perhaps through search or by remembering vague locations.

Why this fails:

• Structure remains unclear with files scattered across inappropriate locations
• Searching becomes difficult because files lack context or consistent naming
• Accidental overwrites happen when people can’t tell if a file is current or outdated
• Team efficiency suffers as people waste time hunting for files

The solution: Always place files in logical libraries and folders, even if it seems like “extra work” in the moment. Those thirty seconds of intentional placement can save hours of searching and confusion later. Think of it like putting groceries away properly rather than just dumping everything on the kitchen counter; the little bit of extra work upfront pays off every time you need something.

Mistake 2: Ignoring or Mismanaging Permissions

SharePoint’s flexibility with permissions is powerful, but that power creates opportunities for problems if not managed carefully.

Common permission mistakes:

Giving everyone “Edit” rights when only a few people need to edit. This seems egalitarian and avoids having to think carefully about roles, but it creates risks. Files can be changed or deleted unintentionally by people who meant to view, not modify. Important documents can be altered without proper review processes.

Applying overly restrictive permissions that block people who legitimately need access, forcing them to constantly request access or work around the system.

Granting individual permissions rather than using groups, creating a frustrating hellscape of person-by-person access rules that becomes impossible to audit or update consistently.

Setting different permissions at multiple levels without documenting the logic, creating confusion about why someone can access some folders but not others in the same library.

Real-world scenario: A finance team stores budget files in SharePoint and gives everyone in the department edit access because “we’re all on the team.” Someone accidentally deletes last quarter’s report while cleaning up their own files. Nobody notices for weeks. When the loss is discovered, the version history shows who deleted it, but the damage to trust and workflow is already done. A better approach would be to set read-only access for most team members and edit access only for budget owners.

Best practices for permissions:

• Use group-based permissions whenever possible rather than granting access to individuals
• Apply “Read-only” access for large groups who need to view but not modify
• Limit “Full Control” to library owners or administrators who need to manage structure and permissions
• Document your permission strategy so others understand the logic when they need to maintain it
• Audit permissions periodically to ensure they still match actual needs as teams evolve

Mistake 3: Overcomplicating Metadata

Metadata is genuinely powerful when used appropriately. It enables sophisticated filtering, automated workflows, and enhanced searchability beyond what folders alone can provide. But that power tempts people to over-engineer metadata schemes that create more problems than they solve.

Warning signs of metadata overcomplication:

• Requiring a dozen metadata fields for every document uploaded
• Creating metadata categories so specific that they’re rarely used consistently
• Implementing metadata that duplicates information already in filenames or folder structure
• Mandating metadata that users don’t understand or see value in maintaining

The result: People avoid using SharePoint properly because filling out extensive metadata is a pain in the arse! Or they fill in metadata carelessly just to get past the requirement, making it useless for its intended purpose.

Better approach:

• Track only essential information that genuinely improves organisation or searchability. Examples might include Project Name, Client, Document Type, or Status.
• Don’t require metadata that isn’t consistently used or maintained. If nobody filters by a particular field, stop requiring it.
• Make metadata easy to apply with dropdown choices rather than free-text fields whenever possible
• Provide clear guidance on what each metadata field means and when to use specific values
• Start simple and add complexity only when proven necessary. Begin with two or three useful metadata fields and expand only if users demonstrate need for more sophisticated categorisation.

Mistake 4: Leaving Important Files in Teams Chats

Many teams use Microsoft Teams heavily for daily communication, which is exactly what Teams is designed for. However, a common mistake is treating chat attachments as permanent file storage.

The problem: Files shared in Teams chats typically live in the sender’s OneDrive, not in SharePoint. This creates several issues:

Files aren’t genuinely team resources. They remain under individual ownership, subject to the sender’s account status.

Team members may lose access if the sender leaves the organisation or changes their sharing settings.

Your filing system fragments with important files scattered across multiple people’s OneDrive accounts rather than consolidated in team libraries.

Discovery becomes nearly impossible. Try finding a specific file that was shared in a chat eight months ago and you’ll spend significant time scrolling through conversations.

Real-world scenario: Someone shares a critical project specification document in a Teams chat. The team references it regularly through the chat link. Six months later, that person leaves the company. Suddenly the link breaks, nobody can access the specification, and now the team needs to reconstruct information from memory or track down alternative copies. This entire problem could have been avoided by storing the specification in the team’s SharePoint library from the beginning.

The solution: Develop a team habit of moving important chat files into SharePoint for long-term storage. When someone shares a document in chat that will have ongoing value, take a moment to save it properly in the appropriate SharePoint library. You can then share the SharePoint link back to the chat, creating a stable reference point.

Mistake 5: Never Cleaning Up Old Content

SharePoint libraries tend to accumulate content over time. Completed projects, outdated policies, superseded versions, and historical documents gradually fill libraries, making it progressively harder to find current, relevant files.

Why this matters:

• Search results become cluttered with outdated content
• Users waste time determining which version is current
• Storage grows unnecessarily
• The library loses its effectiveness as a tool for finding what you need

Better approach: Schedule periodic reviews of SharePoint libraries to:

• Archive or delete completed project files that no longer need active access
• Remove drafts or working files that were never finalised
• Consolidate duplicates
• Update or remove outdated documents
• Ensure current files are clearly identified and properly located

This doesn’t need to be a massive undertaking. A quarterly review of 30-60 minutes can keep most team libraries healthy and usable.

Integrating SharePoint with Teams

One of the main reasons SharePoint often feels invisible or mysterious is that Microsoft Teams uses it extensively behind the scenes. Most people interact with SharePoint through Teams without realising it.

Understanding this relationship eliminates confusion and helps you make better decisions about file management.

How Teams and SharePoint Work Together

Every Team has a corresponding SharePoint site. When you create a new Team in Microsoft Teams, the system automatically provisions a SharePoint site to support that Team.

Files uploaded to channels are stored in SharePoint. When you upload a document to a Teams channel, it doesn’t live “in Teams”, it lives in the SharePoint document library associated with that Team’s site. Teams simply provides a convenient interface for accessing those SharePoint files.

Teams acts as a collaboration interface. Think of Teams as a user-friendly front door to SharePoint storage, optimised for conversation and real-time collaboration rather than structured organisation.

The Files tab in each channel shows the underlying SharePoint library. When you click the Files tab in a Teams channel, you’re actually viewing a SharePoint document library. Every file management action you take in Teams, (uploading, organising into folders, opening for editing), happens in SharePoint.

Practical Example: The Complete Flow

Let’s have a look at how this works in practice:

1. Your project team uploads a project plan document to your Teams channel called “Q1 Projects”
2. The file is automatically stored in the SharePoint document library associated with your Team
3. Version history begins tracking changes as team members edit
4. All team members can access and co-author the document without leaving Teams
5. The file is safely stored with proper organisational ownership
6. If you navigate directly to the SharePoint site, you’ll find that same file sitting in the document library

Nobody has to leave Teams to access the file, but it’s safely stored in SharePoint with all the benefits that provides: organisational ownership, version history, proper permissions, and long-term stability.

This architecture means you get the best of both worlds: the collaboration-focused interface of Teams for daily work, with the reliable, structured storage of SharePoint underneath.

Many people interact with SharePoint every day without realising it, simply by working in Microsoft Teams.

In the next article, I’ll explain how Teams uses SharePoint behind the scenes, and why understanding that relationship makes file management much easier.

Best Practices for Using SharePoint Effectively

Bringing together everything we’ve covered, here are some best practices to help you use SharePoint more effectively:

1. Plan Your Structure, But Keep It Simple

Start with a clear organisational concept that matches how your team actually thinks about their work. Use simple top-level folders and minimal nesting. Resist the urge to create elaborate hierarchies that look impressive but are impractical for daily use.

Remember: a simple structure that everyone uses consistently beats a perfect structure that’s too complicated to maintain.

2. Move Shared Work from OneDrive to SharePoint

Establish a clear workflow: drafts begin in OneDrive where individuals can work freely, then migrate to SharePoint once they need to become team resources. This workflow gives you the benefits of both platforms; personal flexibility during creation, organisational permanence for completed work.

Make this migration a conscious habit rather than something that happens occasionally when you remember.

3. Set Clear, Appropriate Permissions

Use groups for access control rather than granting permissions individually. Apply read-only access broadly and edit access selectively. Limit full control to people who genuinely need to manage library structure and permissions.

Document your permission strategy so it’s sustainable as team membership changes.

4. Take Advantage of Version History and Co-Authoring

Encourage team members to work simultaneously on documents rather than taking turns. Eliminate the practice of creating multiple file versions manually and let SharePoint’s version history handle that automatically.

Train your team to trust version history for recovery and comparison rather than creating safety-net copies.

5. Use Teams as the Interface, and SharePoint as the Storage

Access files through Teams channels for daily collaboration but understand that SharePoint provides the underlying storage. This model prevents confusion and helps you make better decisions about file organisation.

You don’t need to duplicate files between Teams and SharePoint because they’re already connected!

6. Maintain Libraries Regularly

Schedule periodic reviews to remove outdated content, consolidate duplicates, and ensure current files are properly organised and clearly identified. Regular maintenance keeps SharePoint libraries functional and prevents the gradual accumulation of clutter that undermines usability.

7. Train Your Team on the Fundamentals

Take time to ensure everyone on your team understands SharePoint’s purpose, basic structure, and connection to Teams. Fifteen minutes of clear explanation can prevent months of confusion and mistakes.

When everyone operates from the same understanding, file management becomes a whole lot easier.

Bonus Tip: For teams building shared knowledge bases, OneNote can complement SharePoint nicely. I’ve covered this in more detail in my article on creating a wiki in Microsoft OneNote.

Understanding SharePoint’s Technical Foundation

For those interested in understanding what’s happening technically, here’s a brief overview of SharePoint’s architecture:

SharePoint is built on a hierarchical structure:

• Tenant: Your organisation’s entire SharePoint environment
• Sites: Individual team sites, communication sites, or specialised sites for different purposes
• Libraries: Document storage containers within each site
• Folders and Files: The actual organisational structure and content within libraries

Each Microsoft Team gets its own SharePoint team site automatically provisioned when the Team is created. This site includes a default document library called “Documents” where all channel files are stored.

Permissions can be managed at multiple levels including site, library, folder, or individual file, which provides plenty of flexibility. However, simpler permission structures are usually more maintainable and less error prone.

Search indexes all content automatically, making files findable through keywords, metadata, or content within documents themselves. This powerful search capability is why elaborate folder structures are usually unnecessary.

Understanding this architecture helps you recognise that SharePoint provides the foundational storage and management platform, while interfaces like Teams provide specialised ways to interact with that foundation for specific purposes.

Bringing It All Together

SharePoint is powerful, but only if you use it properly and intentionally. Its effectiveness depends entirely on understanding its role within your overall file management strategy.

Remember these core principles:

• SharePoint is the team’s filing cabinet, not your personal workspace
• Ownership is organisational or shared, not individual
• Structure and permissions matter, but keep them practical and maintainable
• Use SharePoint for long-term storage and collaboration that needs to persist
• Access SharePoint through whatever interface makes sense, Teams for daily collaboration, direct access for structured organisation
• Maintain it regularly to prevent clutter from undermining its usefulness

Conclusion

By understanding SharePoint’s purpose and capabilities, you avoid the common traps that plague teams who don’t use it properly: scattered files across multiple locations, version conflicts and confusion about current documents, accidental deletions without recovery options, and critical information lost when people leave.

Once you understand SharePoint, what it’s for, how it works, and how it works with OneDrive and Teams, it can become the reliable foundation for all team and organisational documents. Collaboration becomes simpler, files become findable, and the stress of wondering “where did that document go?” largely disappears.

SharePoint isn’t complicated. It just needs to be used with clear understanding of its purpose and proper implementation of straightforward best practices. Master those fundamentals, and SharePoint transforms from a mysterious system you interact with occasionally into an indispensable tool that makes collaborative work significantly more effective.

If you’re still deciding where a file should live, it helps to start with the basics. I’ve previously covered how OneDrive works as a personal workspace, including drafts and short-term sharing, in a separate article.