CoreStack vs Spot by Flexera comparison

CoreStack and Spot - A Flexera company are both solutions in the Cloud Cost Management category. CoreStack is ranked #20 with an average rating of 8.3, while Spot - A Flexera company is ranked #5 with an average rating of 8.5. CoreStack holds a 1.1% mindshare in CCM, compared to Spot - A Flexera company’s 4.2% mindshare. Additionally, 100% of CoreStack users are willing to recommend the solution, compared to 100% of Spot - A Flexera company users who would recommend it.

CoreStack

Read 4 CoreStack reviews

269 Views
269 Comparison Views

100% willing to recommend

Spot by Flexera

Read 5 Spot by Flexera reviews

1,639 Views
787 Comparison Views

100% willing to recommend

CoreStack

Spot by Flexera

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Executive SummaryUpdated on Jan 19, 2026

CoreStack and Spot by Flexera are competing products in cloud management, each offering distinct strengths in governance and compliance, and cost optimization and automation, respectively. CoreStack seems to have the upper hand in governance and security, while Spot excels in cost reduction and resource management.

Features: CoreStack offers robust governance capabilities, compliance management, and multi-cloud cost optimization through a single pane of glass. It delivers well-architected reviews across AWS, Azure, OCI, and Google Cloud, enhancing efficiency. Spot by Flexera provides automated cost optimization, advanced container and Kubernetes management, and seamless integration for improved multi-cloud operations.

Room for Improvement: CoreStack could enhance its user interface for easier navigation and expand its automation capabilities. Its initial setup can be complex, and customization options may be limited. Spot by Flexera can improve its feature set by offering more advanced security tools, expanding its documentation comprehensiveness, and improving customer education regarding feature utilization.

Ease of Deployment and Customer Service: CoreStack offers a flexible deployment model with extensive resources and personalized support, easing integration into existing systems. Spot by Flexera provides an efficient deployment model with strong support and clear documentation, focusing on simplicity and setup speed, though CoreStack is noted for providing more customized customer support.

Pricing and ROI: CoreStack typically involves higher setup costs but delivers substantial ROI via enhanced security and compliance features. Spot by Flexera is perceived as a more cost-effective solution upfront, with significant savings through automated cost management, making it appealing for immediate cost reduction needs.

To learn more, read our detailed CoreStack vs. Spot by Flexera Report (Updated: December 2025).

Buyer's Guide

CoreStack vs. Spot by Flexera

December 2025

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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

CoreStack

Ranking in Cloud Cost Management

20th

Average Rating

8.2

Reviews Sentiment

6.1

Number of Reviews

Ranking in other categories

No ranking in other categories

Spot by Flexera

Ranking in Cloud Cost Management

5th

Average Rating

8.6

Reviews Sentiment

7.5

Number of Reviews

Ranking in other categories

Cloud Management (23rd), Server Virtualization Software (14th), Cloud Operations Analytics (1st), Cloud Analytics (2nd), Compute Service (9th), Containers as a Service (CaaS) (4th)

Mindshare comparison

As of January 2026, in the Cloud Cost Management category, the mindshare of CoreStack is 1.1%, up from 0.9% compared to the previous year. The mindshare of Spot by Flexera is 4.2%, up from 3.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Cost Management Market Share Distribution
Product	Market Share (%)
Spot	4.2%
CoreStack	1.1%
Other	94.7%

Cloud Cost Management

Featured Reviews

reviewer2783919

Associate Vice President at a tech services company with 10,001+ employees

Cost reports have driven accurate AWS workload optimization and continue to guide savings

I can suggest improvements for CoreStack, especially regarding reporting periods. I noticed that some of the cost optimization reports generated potential savings while considering systems that have only maximum utilization of 1% or 2%. The recommendations made in CoreStack to delete a machine have the potential to generate major cost savings, but such machines should not be listed for deletion if they have maximum CPU utilization of 1%. I have concerns about needed improvements primarily regarding AWS. If a customer is running ten virtual machines and one machine has a maximum of 1% utilization, it is considered as an idle instance in the report, which completely ignores that particular machine. This should not be the approach.

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Karan Saini

Dev Ops Engineer at a construction company with 11-50 employees

Intelligent autoscaling has cut compute costs and now manages ephemeral workloads efficiently

I think overall Spot is quite good. The UI is powerful, but it can feel a bit dense for some new users. More guided onboarding would help teams adopt advanced features faster, and deeper insights into Kubernetes resource usage would be beneficial. Overall, it is a really good platform that is quite mature and stable. I chose a rating of nine because it may sometimes be a bit overwhelming for newcomers, and there are also a few areas in which the EKS Kubernetes level granularity is a little missing. Overall, I think Spot is a really good and stable tool.

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Quotes from Members

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

Pros

"My advice for others looking into using CoreStack is that anyone who is looking to optimize their workload cost for public cloud services should start using CoreStack because of the reports and granularity it produces to optimize cost, which will benefit them."

"CoreStack has positively impacted my organization by saving hours of time for reporting—for example, the governance report which my employees used to take at least four hours for one customer, and since I'm sending out 20 reports every month, that equates to 80 hours, thus saving me two man-weeks every month and approximately $8,000 in pure savings if I estimate $100 an hour for my architect."

"Currently, I think CoreStack is the best FinOps tool available in the market, which is why we are using it."

"Mainly through improved cost visibility and optimization with CoreStack, we have achieved a good ROI, and for some customers we were able to achieve more than forty percent cost savings by identifying unused and idle resources in their accounts, leading to significant cost savings after we completed the cleanup of those resources."

"The solution offers both block access and file access, making it a nice solution for customers."

"The solution helps us to manage and scale automatically whenever there is a limit to the increase in the application workflow."

"Spot has positively impacted our organization by automating cloud resource management, which has significantly cut costs and improved efficiency."

"Cost saving is the main benefit, and the manual effort required for reviewing and purchasing savings plans and other RIs is something we do not have to manage manually now, as we get automatic suggestions from Spot."

"My compute costs have reduced, capacity and production output have increased, and my overhead for maintaining custom scripts or doing some of the tasks manually has been saved."

Cons

"I believe CoreStack already has very good features in the governance and security parts, but stability can definitely be improved."

"I give it an eight because, as I mentioned, a few things from the billing operations need to be added, and we need more security features, particularly since the market is increasingly demanding better security tools for cloud management platforms, including cloud security posture assessments."

"I noticed that some of the cost optimization reports generated potential savings while considering systems that have only maximum utilization of 1% or 2%. The recommendations made in CoreStack to delete a machine have the potential to generate major cost savings, but such machines should not be listed for deletion if they have maximum CPU utilization of 1%."

"I have not seen a return on investment yet."

"The solution doesn't have support from OCI, and it should start working to onboard OCI."

"There are no particular areas for improvement I can identify."

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Top Industries

By visitors reading reviews

No data available

Manufacturing Company

19%

Computer Software Company

16%

Healthcare Company

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Questions from the Community

What is your experience regarding pricing and costs for CoreStack?

My experience with pricing, setup cost, and licensing is pretty good because we received private pricing, which I cannot disclose. The setup was included as a one-time expense, and licensing is str...

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What needs improvement with CoreStack?

CoreStack can improve by adding a segregation of reserved instances that are shared across child accounts or managed accounts from the parent account, ensuring a cost allocation for all reserved in...

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What is your primary use case for CoreStack?

My main use case for CoreStack is for cost optimization and billing operations, and I'm using it a bit for SecOps and CloudOps, but majorly for FinOps and BillOps. A specific example of how I use C...

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What do you like most about Spot Ocean?

The solution helps us to manage and scale automatically whenever there is a limit to the increase in the application workflow.

See all answers

What needs improvement with Spot Ocean?

Spot can be improved by adding deeper multi-cloud integrations, enhancing real-time security automation, and continuously making advancements based on customer feedback.

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What is your primary use case for Spot Ocean?

I have been using Spot for five years. My main use case for Spot is cloud optimization.We use Spot for optimization by leveraging real-time optimization as well as auto-optimization. The company al...

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Compared 6% of the time

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Compared 5% of the time

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Compared 4% of the time

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Product Reports

Buyer's Guide

CoreStack

January 2026

Download CoreStack product report

Buyer's Guide

Cloud Analytics

December 2025

Download Spot by Flexera product report

Also Known As

No data available

Spot Ocean, Spot Elastigroup, Spot Eco

Overview

CoreStack® Enterprise Enables You to be agile and eliminate waste while proactively mitigating risks by making your cloud governance intelligent and autonomous. It applies Cloud-as-Code™ approach to govern the four critical components of your cloud

CoreStack

Spot by Flexera provides automated cost optimization and container management with multi-cloud integration, achieving up to 70% savings and greater efficiency. It adapts to demand changes using AI-driven insights.

Spot enables organizations to optimize cloud infrastructure in environments such as Kubernetes, AKS, EKS, and AWS. It offers advanced automation features for managing resources, leading to reduced overhead and increased production output. Spot's intelligent autoscaling and node replacement capabilities enhance scalability and reliability. While the platform lacks some granularity in EKS Kubernetes insights, it remains stable and mature, helping organizations minimize costs and improve resource utilization. Opportunities for improvement include OCI support, more detailed multi-cloud integrations, and enhanced Kubernetes insights.

What features does Spot by Flexera offer?

Automated Cost Optimization: Efficiently manages expenditure and provides significant savings.
Advanced Container Management: Streamlines container management across multiple platforms.
Multi-Cloud Integration: Seamlessly integrates with major cloud providers.
Intelligent Autoscaling: Automatically adjusts resources based on demand changes.
Zero-Downtime Node Replacement: Ensures seamless transitions without interrupting workflows.
Integration with AWS: Enhances scalability and system reliability.

What are the benefits of using Spot by Flexera?

Cost Efficiency: Achieves up to 70% cost savings through intelligent solutions.
Increased Production Output: Improves overall productivity by streamlining processes.
Scalability and Reliability: Offers robust autoscaling and no-downtime node replacement.
Support for Financial Governance: Aids in effective financial management and planning.

In industries heavily reliant on cloud-based services, Spot by Flexera is crucial for optimizing resource management and cost efficiency. Organizations leveraging Spot in sectors like technology and finance benefit from real-time optimization techniques and improved governance processes.

Spot - A Flexera company

Sample Customers

CAMS

Freshworks, Zalando, Red Spark, News, Trax, ETAS, Demandbase, BeesWa, Duolingo, intel, IBM, N26, Wix, EyeEm, moovit, SAMSUNG, News UK, ticketmaster

Buyer's Guide

CoreStack vs. Spot by Flexera

December 2025

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