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ClearScale Windows Server 2025 vs Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages comparison

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Executive Summary

Review summaries and opinions

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

Categories and Ranking

ClearScale Windows Server 2025
Ranking in AWS Marketplace
428th
Average Rating
10.0
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Ubuntu 20 (Ubuntu 20.04 LTS...
Ranking in AWS Marketplace
466th
Average Rating
8.6
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Featured Reviews

reviewer2858658 - PeerSpot reviewer
Works at a tech vendor with 11-50 employees
Automated hardening has standardized our servers and reduces effort for secure Windows workloads
The first-boot time is longer than a stock Windows AMI. Sysprep and the initial hardening pass add a noticeable delay before the instance is reachable, which is something to account for if you autoscale and need nodes ready quickly. The hardened defaults also occasionally trip up common installers and agents. A few of our deployment and monitoring tools assumed services or policies that the image had locked down, so we had to add exceptions. A short compatibility checklist of what the hardening changes from a default Windows install would have saved us that debugging. I would also like the option of a CIS Level 2 build for our more sensitive workloads since the image currently only ships a Level 1 baseline. Thanks.
AN
Platform Engineer at a tech services company with 1,001-5,000 employees
Hosting python learning apps has become smooth and supports secure, low‑maintenance deployment
The best feature Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages offers is stability, which stands out to me the most. Stability is the main thing that stands out for me. Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages has positively impacted my organization. Earlier, when we were working in a startup, we deployed almost all the applications on Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages because it was stable. We mostly used Linux to host any application because it is easy to manage, and Linux is made for application deployment rather than Windows, making it much easier to deploy and manage all the deployed applications. It is user-friendly if somebody is into DevOps. Right now, I do not have any metrics to share, but as I said earlier, it gives very good stability and performance.

Quotes from Members

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

Pros

"Because the image arrives CIS Level 1 hardened with the AWS tooling already in place, our servers come up patched, locked down, and ready to join the domain without a separate build out pass."
"Windows Server 2025 is a strong fit for enterprise environments heavily reliant on Microsoft technologies."
"The best feature Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages offers is stability, which stands out to me the most."
"Regarding value for money, organizations that provide services typically use Ubuntu as their primary OS, which is secure, compatible, and developer-friendly, allowing our DevOps team to utilize it effectively for daily deployments and configurations."
"Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages is easy to learn, which is my favorite part about it, as the commands are very easy."
 

Cons

"Initial configuration complexity can still be high for teams without prior Windows Server expertise."
"The hardened defaults also occasionally trip up common installers and agents: a few of our deployment and monitoring tools assumed services or policies that the image had locked down, so we had to add exceptions."
"Despite mentioning many advantages, an area for improvement in Ubuntu is its application support, as it lacks many GUI-friendly applications that are available on Windows or macOS, which limits usability for tasks requiring specific software."
"There are a few applications that are not easy to deploy on Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages, so we need to have some workarounds for that."
"Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages could be improved because most people are using Ubuntu 24 right now, as it is the latest version on the market and has fewer vulnerabilities compared to Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages."
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Questions from the Community

What is your experience regarding pricing and costs for ClearScale Windows Server 2025?
The software charge sits on top of the underlying Windows EC2 cost, which is already higher than Linux, so model both together before you commit to a large fleet. The hourly model suited our autosc...
What needs improvement with ClearScale Windows Server 2025?
The first-boot time is longer than a stock Windows AMI. Sysprep and the initial hardening pass add a noticeable delay before the instance is reachable, which is something to account for if you auto...
What is your primary use case for ClearScale Windows Server 2025?
We use ClearScale Windows Server 2025 as the base image for our .NET and IIS application servers on EC2. These instances host internal line of business web applications and Windows services, and se...
What is your experience regarding pricing and costs for Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages?
We are going with the open source version and are not purchasing Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages.
What needs improvement with Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages?
There are a few applications that are not easy to deploy on Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages, so we need to have some workarounds for that. For example, certain appli...
 

Comparisons

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Overview

Find out what your peers are saying about ClearScale Windows Server 2025 vs. Ubuntu 20 (Ubuntu 20.04 LTS) (ARM) | Support by SupportedImages and other solutions. Updated: September 2026.
921,523 professionals have used our research since 2012.