Stop Paying the “Microsoft 365 Storage Tax”: Storage Optimization for MSPs

Jennifer Newman

Microsoft 365 is built for productivity. It was never intended to be the long-term archive for everything an organization creates. But many businesses treat native storage that way by default, and for MSPs, it can become an expensive habit that adds up fast.

Sooner or later, the customer asks why the storage bill jumped. Too often, the answer is incomplete because there is not enough tenant-level visibility into what is stored, what is inactive, what is redundant, and what is creating risk.

That uncertainty has real consequences. Premium-tier storage costs keep rising. Margins get tighter. Governance gaps widen. And as customers push toward Copilot and other AI initiatives, messy data becomes a much bigger problem.

With the right approach, Microsoft 365 storage can shift to becoming a measurable, governable, and repeatable managed service that creates value for both you and your customers.

Why this moment matters for MSPs

Customer expectations for MSPs are evolving past needs for help with licensing and basic administration. They expect guidance on data lifecycle, governance, and long-term cost control.

At the same time, the economics of cloud storage have become more complex. Many providers are dealing with unpredictable charges tied to networking, API requests, and data movement. These variables make it difficult to maintain consistent margins, especially in fixed-price managed service models.

The pressure is already showing. In fact, nearly half (56%) of MSPs in our 2026 Global Cloud Storage Index Report said they exceeded their cloud budgets in 2025. The vast majority (91%) of overall respondents cited at least one fee-related reason why their spending on public cloud storage exceeded budget expectations. When pricing becomes unpredictable, it becomes harder to scale services confidently.

AI complicates the issue even further. Tools like Microsoft’s Copilot rely on well-organized, high-quality data. When environments are cluttered with redundant or outdated information, outcomes suffer. What used to be a storage problem quickly becomes a business problem.

Storage optimization is harder than it looks

On paper, the fix sounds simple: archive older data, delete what is no longer needed, and reduce the storage footprint. In practice, it is rarely that clean.

Most Microsoft 365 environments lack clear visibility into which data is inactive, which still has business value, and which may need to be retained for legal or regulatory reasons. Across mid-market tenants, we commonly find that 20-40% of data is inactive, 10-25% is redundant or trivial, and long-term content is still sitting in premium storage. Lifecycle policies, if they exist at all, are often inconsistent.

That makes even basic storage decisions harder than they should be. Delete the wrong content and you create compliance exposure. Keep everything and costs continue to rise while efficiency drops. Defensible disposal requires policy, documentation, and consistency.

The economics can get complicated too. Storage costs are not always limited to capacity. Access fees, retrieval charges, and other usage-based costs can erode MSP margins and make the customer conversation harder. If the cost of storing archived data changes based on access patterns, it becomes more difficult to present a clear, predictable ROI. Some archive approaches also introduce delays when data needs to be accessed quickly, which creates a different kind of operational problem.

Effective storage optimization depends on a few fundamentals: visibility into what exists in the tenant, clear policies for what should be kept or removed, and a storage model that supports both cost control and governance over time. When those pieces are in place, MSPs are in a better position to turn storage management into a repeatable service instead of a reactive cleanup exercise.

Wasabi and AvePoint Opus: A practical path to turning storage into a managed service

We’ve partnered with AvePoint to create a solution that simplifies storage optimization for MSPs. It enables you to turn storage optimization into a standardized offering, with a clear, repeatable process that can be applied across tenants.

Here’s how it works:

Step 1: Discover and analyze

Before you take any action, you need to understand the reality of the environment. AvePoint Opus enables tenant-wide discovery and analysis at scale. It allows you to identify inactive data, redundant content, and potential risks. It gives you a foundation to act with confidence.

Step 2: Optimize storage

With critical visibility, you can optimize your customers’ Microsoft 365 storage. Defensible deletion removes unnecessary data, while archiving shifts inactive content out of premium storage without disrupting users. This is where meaningful cost reduction begins to take shape.

Step 3: Relocate for predictable economics

From there, the focus shifts to where that data lives. Moving archived content to Wasabi Hot Cloud Storage introduces a more predictable economic model. With no hidden fees for data egress or API requests, pricing becomes simpler and easier to manage. At the same time, performance remains high, ensuring that customers can access their warm and cold data whenever they need it.

Step 4: Monitor continuously

The storage optimization process doesn’t stop with a one-time cleanup. Ongoing lifecycle management is essential. Automated policies ensure that data continues to be governed appropriately as customers create new content and existing content ages.

Step 5: Classify for governance and AI readiness

Intelligent classification brings everything together. By applying machine learning to categorize data, you can scale governance efforts and improve audit readiness while supporting emerging AI use cases.

Making it real: Use case scenario

Consider a mid-market customer with a 60 TB Microsoft 365 environment. Growth has been steady, but largely unmanaged.

After a structured analysis, several patterns emerge. About 18 TB of data is active. Another 9 TB is clearly redundant or trivial. And 12 TB of data needs to be retained long-term for compliance but doesn’t need to remain in premium storage.

By removing the 9 TB of defensible redundant data and archiving the 12 TB to a more cost-effective tier of storage, the customer can free up about 35% of the premium storage in Microsoft 365. This reduces immediate storage pressure and provides a clearer view of what remains. It also creates a repeatable model that you can apply across additional tenants.

Multiply that across multiple customers, and the impact becomes substantial. What started as a cost challenge evolves into a structured service offering with measurable results.

Turning storage optimization into a standardized offering

With solutions like AvePoint Opus and Wasabi available through marketplaces such as Pax8, procurement becomes simpler. You can attach storage optimization to existing customer relationships without introducing unnecessary complexity.

This creates a clear path to a new recurring revenue stream. Instead of treating storage challenges as one-off projects, you can offer ongoing lifecycle management as part of your managed services portfolio. It also aligns with how customers prefer to buy. They are looking for bundled solutions that address multiple needs, from cost control to compliance to AI readiness.

By packaging storage optimization as a defined offering, you position your business to meet those expectations while strengthening long-term customer relationships.

The bottom line

Microsoft 365 storage growth is inevitable. Margin erosion is not. When you introduce visibility, apply governance, and align storage strategy with long-term economics, you gain control over both cost and complexity.

Intelligent storage optimization transforms Microsoft 365 sprawl into a managed lifecycle service. It reduces costs today, strengthens compliance, and prepares your customers for what comes next.

For MSPs, this is a practical way you can explain costs more clearly, apply governance more consistently, and turn storage management into a service customers can understand and buy.