The two acronyms get treated like synonyms. They aren't. If one vendor has quoted you "managed services" and another has quoted you "cloud solutions," and the proposals look roughly the same on the surface, there's a real difference underneath, and it's usually showing up on your bill.
Here's what each one actually is, and how to tell which fits your situation.
What an MSP actually does
A Managed Service Provider runs your IT for you. The classic MSP model leans on-prem: they manage your servers, network gear, endpoints, backups, and helpdesk. Many also handle cybersecurity, patching, and 24/7 monitoring. Pricing is usually a flat monthly fee per user or device.
Many MSPs also resell software and cloud services. They'll bundle your Microsoft 365 or Azure subscription into the same monthly invoice as the helpdesk, the firewall, and the printer support. That's convenient. It's also where most of the markup hides.
If you're buying Microsoft 365 from your MSP, you're paying more than you would if you bought it directly.
What a CSP actually does
A Cloud Solution Provider sells and supports cloud services directly. In Microsoft's case, a CSP is a partner authorized to sell Microsoft 365, Azure, Dynamics, and other Microsoft cloud products to end customers, with billing and support handled at the partner level.
The pricing model is consumption-based or per-license. You skip the reseller markup that gets baked in when an MSP packages the same licenses. Most CSPs also handle the licensing admin, advise on the right SKUs, and help with deployment.
What a CSP typically does not do is manage your on-prem network or run your helpdesk. That's still MSP territory.
Where the line actually sits
A simple way to draw it:
- MSP: day-to-day IT operations. Helpdesk, hardware, on-prem, broad vendor coverage.
- CSP: the licensing and cloud-subscription channel for a specific platform. For us, that's Microsoft.
Plenty of providers do both, which is fine, and plenty of customers use both, which is often the right answer. A common setup: buy your Microsoft licensing direct from a CSP to skip the markup, and keep your MSP for the on-prem and helpdesk work they're good at.
Why the distinction shows up on the bill
The most common version of "we didn't realize we were overpaying" goes like this. A customer's MSP has been billing them per-seat for Microsoft 365 at a rate that bakes in a healthy margin. The MSP isn't doing anything wrong; that's the model. But the customer didn't realize the licenses themselves could be moved to a CSP at a lower per-seat cost without disrupting any of the on-prem work the MSP is doing.
If you've never separated those two lines on your IT bill, it's worth doing. The licensing piece is portable. The managed services piece usually isn't.
Why this matters more than it used to
CSPs used to be one of several ways to buy Microsoft licensing. That's changing. Microsoft is actively steering customers away from the legacy Enterprise Agreement (EA) and toward the CSP program. There are five strategic reasons behind the shift, and they all point in the same direction. EA was built for predictable, three-year, set-it-and-forget-it licensing. CSP is built for the way most companies actually use software now: monthly, elastic, and aligned to current headcount.
Two practical effects worth knowing about.
The first is shelfware. Under an EA, the average enterprise carries 15-22% unused licenses for the full three-year term because the contract makes it hard to scale down. CSP lets you drop seats the month you stop needing them. For a 1,000-seat org that lays off 150 people in year two of an EA, that's roughly $130,000 in licenses you're paying for and not using.
The second is support. Microsoft has been quietly handing front-line M365 and Azure support to certified CSP partners. Triage, resolution, and escalation now happen at the partner level, with Microsoft as the escalation backstop. That's why the CSP you pick matters more than it used to. They aren't just selling you licenses; they're handling your support.
If you're on an EA today, the pros and cons of switching to CSP are worth a real look before your next renewal.
What to look for in either provider
The skills gap in IT is real, and it shows up in both kinds of providers. Microsoft licensing rules change. Compliance frameworks change. Azure services get renamed and restructured all the time. A provider that hasn't kept up will quietly cost you in wrong SKUs and missed discounts.
Practical questions to ask:
- Are the engineers in-house, US-based, and certified? Or is support outsourced and tiered?
- How specialized are they? Someone who does a little of everything is usually worse than someone who does a narrower set of things well.
- For CSPs: Direct Bill or Indirect? Direct Bill partners deal with Microsoft directly and tend to have better pricing and faster escalation paths.
- For MSPs: what's actually in the monthly fee, and what's billable on top?
- If support is part of the deal, what's the real first-response time, and what's the escalation path to Microsoft when needed?
That last one matters more than it sounds. A good Direct Bill CSP can resolve escalated tickets in around 88 hours, versus 9-12 days going direct to Microsoft.
Where TrustedTech fits
We're a Microsoft Direct Bill CSP. We sell Microsoft 365 and Azure licensing at prices that beat most of the channel, and our engineers are in-house, US-based, and Microsoft-certified. We don't manage your on-prem network. That's not what we do. But anything inside the Microsoft cloud environment, from license sizing to deployment to renewals, is in our lane.
A few numbers from how we actually run support: 5-minute average first-response time on tickets, 86% of cases resolved in-house before escalation to Microsoft, and roughly 50% lower cost than Microsoft Unified Support for comparable coverage.
If you're on Microsoft 365 or Azure and nobody has audited what you're paying against what you're actually using, we'll do it for free. Most customers find savings. The ones who don't at least walk away knowing the number.
Frequently Asked Questions
Is a CSP a type of MSP?
No. They're different categories. An MSP runs your IT operations. A CSP sells and supports cloud subscriptions for a specific platform (in our case, Microsoft). Some companies do both. Most do one well and the other adequately.
Can my MSP also be my CSP?
Yes, and many are. The question is whether they're a Direct Bill CSP with Microsoft or an indirect reseller buying from a distributor. Direct Bill partners have better pricing and faster escalation paths. Indirect resellers usually mark up both.
Why is Microsoft pushing customers from EA to CSP?
Short version: EAs are rigid three-year commitments, CSP is monthly and elastic, and the elastic model fits how most businesses actually use software. We've written more on the strategic reasons behind the shift and on common questions about moving from EA to CSP.
Will I save money buying Microsoft 365 from a CSP instead of through my MSP?
Usually, yes. MSPs that resell M365 typically build margin on top of the per-seat price. Going direct to a Direct Bill CSP cuts that markup. The exact savings depend on your seat count and current rate, but the gap is rarely small.
What kind of support comes with a CSP?
For Microsoft cloud products, the CSP is now your front line for support. Microsoft has shifted toward a partner-led support model, which is why partner quality matters more than it used to. A good CSP triages, resolves what it can in-house, and escalates to Microsoft only when needed. A bad one forwards your ticket and waits.
Do I need both an MSP and a CSP?
Often, yes. If you have on-prem hardware, helpdesk needs, or a multi-vendor IT environment, you probably want an MSP. If you're using Microsoft 365 or Azure, you should have a CSP. Many businesses run both: CSP for the licensing and Microsoft cloud, MSP for everything else.
How do I switch my licensing from an EA or another reseller to a CSP?
It's mostly an admin process. The new CSP gets delegated permissions to your tenant, the licenses get re-provisioned under their billing relationship, and the old contract winds down at its term. We've put together a step-by-step on planning the move for anyone considering it.
Related Articles
- Microsoft's Shift from EA to CSP: 5 Strategic Reasons Driving Change — The high-level "why" behind Microsoft's push to move customers off Enterprise Agreements.
- Pros and Cons of Switching from EA to CSP — A side-by-side breakdown of the tradeoffs, from price locks to OpEx flexibility.
- Shelfware vs. Elasticity: Why Enterprises Are Moving from EA to CSP — The hidden cost of unused EA licenses and how CSP elasticity eliminates the "ghost license" problem.
- Microsoft EA to CSP Frequently Asked Questions — Common questions answered for organizations weighing the move from an Enterprise Agreement to CSP.
- How to Plan a Successful Microsoft EA to CSP Migration — A step-by-step on planning the move with minimal disruption.
- Microsoft CSP Program Changes: Expert Insights & FAQs — What the partner-led support model means for IT leaders, plus answers to common support questions.
- Understanding the Shift in the Microsoft CSP Support Market — How Microsoft's move to a partner-led support model changes the game for M365 and Azure customers.
