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CoreStack vs Spot by Flexera comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 19, 2026

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
5.9
CoreStack optimizes cloud costs and enhances user satisfaction, delivering substantial financial benefits and retaining key clients.
Sentiment score
7.9
Spot by Flexera cut compute costs by 75%, saved over 500,000 euros annually, and improved flexibility and operations.
With 20 reports every month, that's 80 hours saved, equating to two man-weeks per month, or $8,000 in savings based on a $100 hourly rate for my architect.
Senior Vice President at a tech services company with 10,001+ employees
We suggested they proceed with CoreStack, and after onboarding it to our offering, within three months, we received positive feedback from customers that we were able to reduce some of their costs.
Senior Solution Architect at Hitachi Systems India Private Ltd
It generates value addition on top of the Trusted Advisor report, which saves major effort for our resources.
Associate Vice President at Hitachi Systems India Private Limited
By using Spot by Flexera across a year, we were able to save more than 500,000 euros.
License manager at a financial services firm with 10,001+ employees
Our technology predicts demand, selects the cheapest instance mix, sizes the workloads appropriately, and scales it automatically based on policy, resulting in significant savings by reducing manual work and enhancing our flexibility, which has helped accelerate our deployments.
Global Hyperscaler Alliances Director at a tech vendor with 1,001-5,000 employees
I cannot share the exact number, but I can share the figure that my EC2 and EKS compute cost reduced by around 65 to 75% with Spot.
Dev Ops Engineer at a construction company with 11-50 employees
 

Customer Service

Sentiment score
6.7
CoreStack is highly praised for exceptional customer support, saving time and money, with top ratings from satisfied users.
Sentiment score
8.4
Spot by Flexera provides responsive and effective customer service, receiving high ratings for their excellent technical support.
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.
Senior Vice President at a tech services company with 10,001+ employees
I have interacted with CoreStack's customer support, and we managed to obtain a technical demo from their team for my team from time to time.
Associate Vice President at Hitachi Systems India Private Limited
I would rate the customer support a nine out of ten.
Global Hyperscaler Alliances Director at a tech vendor with 1,001-5,000 employees
We did not have to use it many times, but the few times that we did use it, it was very fast and very useful.
License manager at a financial services firm with 10,001+ employees
 

Scalability Issues

Sentiment score
7.5
CoreStack excels in scaling SaaS environments, offering seamless multi-cloud management, governance, and scalability without impacting user operations.
Sentiment score
7.6
Spot by Flexera is scalable, adaptable, and open-source, effectively managing AWS expansions and connecting diverse data sources.
It generates and captures metrics of your workload, which meets our requirements all the time.
Associate Vice President at Hitachi Systems India Private Limited
We haven't encountered any issues regarding scalability; the SaaS platform easily accommodates our growth.
Senior Vice President at a tech services company with 10,001+ employees
It is also a very easy tool to connect to different data sources and different servers since it is open source.
License manager at a financial services firm with 10,001+ employees
Spot's scalability is quite good, and it can be expanded to multiple environments.
Dev Ops Engineer at a construction company with 11-50 employees
 

Stability Issues

Sentiment score
8.0
CoreStack ensures stability and compliance across environments, supporting CIS and NIST standards, with intuitive reporting for audits.
Sentiment score
6.3
Spot by Flexera is stable but faces data update delays, requiring manual IT asset corrections and user-reported server discrepancies.
In Spot by Flexera, we could see both computers, the old and the new one, but the system was not recognizing that the old one was no longer being used.
License manager at a financial services firm with 10,001+ employees
 

Room For Improvement

CoreStack needs improvements in cost allocation, security, UI responsiveness, and AWS reporting, with better integration and governance.
Spot by Flexera could improve through storage cost optimization, better integrations, enhanced UI guidance, timely updates, and Kubernetes insights.
The recommendations made in CoreStack to delete a machine have the potential to generate major cost savings.
Associate Vice President at Hitachi Systems India Private Limited
We need more security features, particularly since the market is increasingly demanding better security tools for cloud management platforms, including cloud security posture assessments.
Senior Vice President at a tech services company with 10,001+ employees
Adding features to automate tasks at the operations level could help provide better visibility across the cloud for our operational engineers.
Senior Solution Architect at Hitachi Systems India Private Ltd
Continuously making advancements based on customer feedback.
Global Hyperscaler Alliances Director at a tech vendor with 1,001-5,000 employees
Spot could be improved by adding features that help identify data to optimize storage costs by detecting datasets within our environment based on criteria such as age and usage.
AVP DevOps and Product Support at a recruiting/HR firm with 1,001-5,000 employees
More guided onboarding would help teams adopt advanced features faster.
Dev Ops Engineer at a construction company with 11-50 employees
 

Setup Cost

Users praise Spot by Flexera's pricing for its competitiveness and convenience, rating it highly against market alternatives.
My experience with pricing, setup cost, and licensing is that it is straightforward and has flexible pricing based on workload consumption.
Associate Vice President at Hitachi Systems India Private Limited
I believe has been competitively priced across the market.
Senior Vice President at a tech services company with 10,001+ employees
The pricing is reasonable and convenient, and the value it offers is completely in line with what I am spending.
Dev Ops Engineer at a construction company with 11-50 employees
I was aware of different pricing, setup costs, and licensing across the company.
License manager at a financial services firm with 10,001+ employees
 

Valuable Features

CoreStack enhances multi-cloud cost efficiency, visibility, compliance, and governance, improving operations, customer satisfaction, and resource savings.
Spot by Flexera optimizes cloud costs, manages resources efficiently, and integrates with AWS, improving scalability and decision-making with AI.
The single pane of glass for multi-cloud cost optimization helps me day-to-day by bringing a lot of operational excellence; it saves a lot of time because rather than going to each and every account or multi-cloud portal, which takes a lot of time, having everything on a single pane of glass increases efficiency, delivers results in less time, and provides clear reporting that can be shared with the customer in PDF or CSV formats.
Senior Vice President at a tech services company with 10,001+ employees
The best features CoreStack offers are primarily the recommendations for cost optimization for RDS and EC2 machines.
Associate Vice President at Hitachi Systems India Private Limited
For example, from AWS, it provides visibility on EBS volumes that are not being used, and it gives recommendations to delete them and save some cost.
Senior Solution Architect at Hitachi Systems India Private Ltd
Spot's automated cost optimization works by continuously analyzing the workload and applying policies to minimize cloud spend without sacrificing performance.
Global Hyperscaler Alliances Director at a tech vendor with 1,001-5,000 employees
The fact that it can mix dozens of instance families dynamically is something which the AWS native autoscalers simply cannot do.
Dev Ops Engineer at a construction company with 11-50 employees
Spot helps us detect such changes within AWS at least one hour prior, allowing us to have a mitigation plan in place and host other servers within the same setup to avoid impacting the application.
AVP DevOps and Product Support at a recruiting/HR firm with 1,001-5,000 employees
 

Categories and Ranking

CoreStack
Ranking in Cloud Cost Management
21st
Average Rating
8.4
Reviews Sentiment
6.1
Number of Reviews
3
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
6
Ranking in other categories
Cloud Management (19th), Server Virtualization Software (14th), Cloud Operations Analytics (1st), Cloud Analytics (3rd), Compute Service (9th), Containers as a Service (CaaS) (3rd)
 

Mindshare comparison

As of May 2026, in the Cloud Cost Management category, the mindshare of CoreStack is 1.3%, up from 0.8% compared to the previous year. The mindshare of Spot by Flexera is 4.1%, down from 4.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Cost Management Mindshare Distribution
ProductMindshare (%)
Spot by Flexera4.1%
CoreStack1.3%
Other94.6%
Cloud Cost Management
 

Featured Reviews

Manmohan Rao - PeerSpot reviewer
Associate Vice President at Hitachi Systems India Private Limited
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.
Bruna Müller - PeerSpot reviewer
License manager at a financial services firm with 10,001+ employees
Centralized asset data has transformed how we manage licenses and make cost-saving decisions
One problem that we faced using Spot by Flexera is that in certain servers, the data was not being updated correctly, and we had a certain delay. For example, someone was using a computer, and then this user received a new one. In Spot by Flexera, we could see both computers, the old and the new one, but the system was not recognizing that the old one was no longer being used. We had a couple of IT assets that were not being used, and we had this information in our internal servers, but Spot by Flexera was not able to update on time. We had to fix this information manually.
report
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Top Industries

By visitors reading reviews
Media Company
19%
Financial Services Firm
10%
Healthcare Company
10%
Comms Service Provider
8%
Financial Services Firm
13%
Manufacturing Company
11%
Computer Software Company
9%
Healthcare Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business2
Large Enterprise6
 

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...
What needs improvement with CoreStack?
At this time, we are exploring other options from CoreStack, but I do not think any specific improvements are needed. However, adding features to automate tasks at the operations level could help p...
What is your primary use case for CoreStack?
My main use case for CoreStack is cloud cost governance and FinOps maturity. We are using CoreStack for our operations team and we have multiple cloud customers from different hyperscalers. For a s...
What needs improvement with Spot Ocean?
One problem that we faced using Spot by Flexera is that in certain servers, the data was not being updated correctly, and we had a certain delay. For example, someone was using a computer, and then...
What is your primary use case for Spot Ocean?
For the past two years, I have been developing a project to implement Spot by Flexera as a software asset management tool. It is used to manage all the IT assets and software licenses within all th...
What advice do you have for others considering Spot Ocean?
The interface of Spot by Flexera was very simple to use. Spot by Flexera Academy had lots of important information that made the usage even easier. In general, I do not think there are any addition...
 

Comparisons

 

Also Known As

No data available
Spot Ocean, Spot Elastigroup, Spot Eco
 

Overview

 

Sample Customers

CAMS
Freshworks, Zalando, Red Spark, News, Trax, ETAS, Demandbase, BeesWa, Duolingo, intel, IBM, N26, Wix, EyeEm, moovit, SAMSUNG, News UK, ticketmaster
Find out what your peers are saying about CoreStack vs. Spot by Flexera and other solutions. Updated: April 2026.
893,221 professionals have used our research since 2012.