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KACE Systems Management Appliance (SMA) vs Microsoft Windows Server Update Services comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Aug 19, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
7.3
KACE SMA increases efficiency and productivity, offering rapid ROI by streamlining operations and reducing time, costs, and staffing needs.
Sentiment score
3.8
Microsoft Windows Server Update Services offers cost-effective automation and patch management, centralizing updates to reduce crashes and download traffic.
The return on investment is seen in the quick access to information, good inventory management, and efficient systems management.
If they have some bundle options to pay less for more, we will get it and use it.
 

Customer Service

Sentiment score
6.6
KACE SMA support is praised for its expertise and 24/7 availability, with occasional room for flexibility improvement.
Sentiment score
4.5
Microsoft Windows Server Update Services support is mixed, with praise for premium help but concerns over wait times and organization.
I would rate the customer support for Quest KACE Systems Management Appliance (SMA) as a 10.
The customer service is very good, providing quick customer support in Spanish.
When you pay for the support, you are guaranteed resolution, and I don't think anybody else does that.
Premium support does not have any benefits.
There was a time when contacting the support agency was more straightforward.
 

Scalability Issues

Sentiment score
7.2
KACE Systems Management Appliance efficiently supports various organization sizes, excelling in integration, scalability, and comprehensive network management.
Sentiment score
5.7
Microsoft Windows Server Update Services is praised for scalability and flexibility, though some note performance issues in large-scale environments.
We have outgrown the size of one KACE appliance and are now running two.
The product is very scalable as it supports 10,000 thousand endpoints with just one appliance.
To go beyond this, shifting to SCCM is advisable.
 

Stability Issues

Sentiment score
8.1
KACE Systems Management Appliance is praised for its stability, reliability, and efficient performance, with swift recovery during incidents.
Sentiment score
4.9
Microsoft Windows Server Update Services is highly reliable with minimal bugs, supporting various setups effectively and requiring low maintenance.
When we schedule our updates, it works, and that's it—nothing irregular or different than what was expected.
 

Room For Improvement

KACE Systems Management Appliance struggles with scalability, usability, customization, integration, image deployment, and technical support responsiveness.
Microsoft Windows Server Update Services needs UI improvements, enhanced integration, better client support, and efficient updates to reduce disruptions.
Currently, we have to go into each org to deploy applications when we need them all across the university.
The user interface needs improvement as customers have mentioned they do not like the interface since it is not an SMA-based interface.
I would like the updates to be less often and more rarely because they have a high impact on our team.
The speed of it is quite painfully slow, so there's not a lot you can do to get Microsoft Windows Server Update Services to work under stress.
 

Setup Cost

KACE Systems Management Appliance offers cost-effective enterprise solutions, although potentially expensive for small businesses, with no additional feature costs.
Windows Server Update Services is included with Windows Server, offering varied pricing, with differing costs based on licensing models.
The pricing is in the middle range of the market, not too expensive but not the cheapest either.
My experience with pricing, setup cost, and licensing for Quest KACE Systems Management Appliance (SMA) is that, hands down, it beat all of the others in simplicity and pricing.
It's a free service.
It's free.
 

Valuable Features

KACE SMA offers integrated, centralized IT management for efficient software deployment, asset management, and security with customizable inventories.
Microsoft Windows Server Update Services offers efficient, centralized update management with scalability, AD integration, cost-effectiveness, and selective patch downloads.
Scripting has saved us hundreds of hours over the years when patching these vulnerabilities compared to how we did it before.
The most valuable features include simplicity, which makes systems management easier and faster, especially for device management.
The ease of use and efficient reporting contribute significantly to my overall productivity.
The most valuable feature of Microsoft Windows Server Update Services is the update for Microsoft Windows Server.
Patch management is indeed valuable, however, the process to achieve it could be improved.
 

Categories and Ranking

KACE Systems Management App...
Ranking in Patch Management
9th
Average Rating
8.8
Reviews Sentiment
6.8
Number of Reviews
39
Ranking in other categories
Client Desktop Management (3rd), Endpoint Compliance (7th), Remote Monitoring and Management (RMM) (11th), Unified Endpoint Management (UEM) (10th)
Microsoft Windows Server Up...
Ranking in Patch Management
3rd
Average Rating
7.8
Reviews Sentiment
6.0
Number of Reviews
52
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2025, in the Patch Management category, the mindshare of KACE Systems Management Appliance (SMA) is 3.9%, down from 5.9% compared to the previous year. The mindshare of Microsoft Windows Server Update Services is 5.0%, down from 8.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Patch Management Market Share Distribution
ProductMarket Share (%)
Microsoft Windows Server Update Services5.0%
KACE Systems Management Appliance (SMA)3.9%
Other91.1%
Patch Management
 

Featured Reviews

Scott Tweed - PeerSpot reviewer
Low maintenance, reliable, and easy to create packages
I like how when you click on the device, it shows you everything that has changed as well as the software versioning. I am really enjoying the inventory aspect of it. The deployment process for both deploying and creating a package is straightforward. I believe the inventory in KACE is superior to SCCM's. I know with SCCM I could do things like remote console into machines via the agent's remote console, but that is not a feature that is provided in KACE. I know that at least in the Systems Management Appliance, I can't get to it. I'm not sure how distribution works, with distribution points. I'm not sure if KACE has that feature. You could use an SCCM to set up distribution points at remote sites so that they don't have to download patches or software from across the country. If you have a DP or something similar, they could pull it down.
Mladen Vidic - PeerSpot reviewer
Has supported routine update requests and maintained reliable system operations
I think that the most valuable feature of Microsoft Windows Server Update Services is the update for Microsoft Windows Server, as we do not use any other tools, but I don't know if Office 365 is under Windows update services regulation; it is not in our domain because we use it, but other teams are responsible for this task. The key features or benefits of Microsoft Windows Server Update Services that have been most valuable in my IT administration processes are just the services for updating my Windows and Windows Servers, and as I mentioned, we don't use many applications; we just use it for Windows updates. Microsoft Windows Server Update Services supports our regular requests for reliable systems, and updates are part of the process of keeping those systems stable, reliable, and confidential.
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Top Industries

By visitors reading reviews
University
12%
Government
10%
Non Profit
9%
Computer Software Company
8%
Computer Software Company
11%
Government
10%
Financial Services Firm
9%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise20
Large Enterprise15
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise23
 

Questions from the Community

What is your experience regarding pricing and costs for Quest KACE Systems Management?
My experience with pricing, setup cost, and licensing for Quest KACE Systems Management Appliance (SMA) is that, hands down, it beat all of the others in simplicity and pricing.
What needs improvement with Quest KACE Systems Management?
I wish Quest KACE Systems Management Appliance (SMA) would have a top-down approach since we use orgs; currently, we have to go into each org to deploy applications when we need them all across the...
What is your primary use case for Quest KACE Systems Management?
My main use case for Quest KACE Systems Management Appliance (SMA) is to deploy applications and maintain security, and we use it day-to-day to handle those tasks. With Quest KACE Systems Managemen...
What is your experience regarding pricing and costs for Microsoft Windows Server Update Services?
Regarding the cost, Microsoft Windows Server Update Services is reasonable.
What needs improvement with Microsoft Windows Server Update Services?
I wouldn't say any of the update services have great features. The only real advantage I have for having Microsoft Windows Server Update Services is if I know or have been informed of a bad update ...
 

Also Known As

Dell KACE Systems Management
Windows Server Update Services, Microsoft WSUS, WSUS, Microsoft Software Update Services, Software Update Services, Microsoft SUS, SUS, MS Windows Server Update Services
 

Overview

 

Sample Customers

Waypoint, Mattos Filho, Meetic, Gems Education, Green Clinic HealthSystem, Service King
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Find out what your peers are saying about KACE Systems Management Appliance (SMA) vs. Microsoft Windows Server Update Services and other solutions. Updated: September 2025.
872,922 professionals have used our research since 2012.