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Microsoft Azure Cosmos DB vs Oracle Exadata Express Cloud Service comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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

Microsoft Azure Cosmos DB
Ranking in Database as a Service (DBaaS)
3rd
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
109
Ranking in other categories
NoSQL Databases (1st), Managed NoSQL Databases (1st), Vector Databases (1st)
Oracle Exadata Express Clou...
Ranking in Database as a Service (DBaaS)
12th
Average Rating
8.0
Reviews Sentiment
6.0
Number of Reviews
12
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2026, in the Database as a Service (DBaaS) category, the mindshare of Microsoft Azure Cosmos DB is 4.9%, up from 2.8% compared to the previous year. The mindshare of Oracle Exadata Express Cloud Service is 2.0%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Database as a Service (DBaaS) Mindshare Distribution
ProductMindshare (%)
Microsoft Azure Cosmos DB4.9%
Oracle Exadata Express Cloud Service2.0%
Other93.1%
Database as a Service (DBaaS)
 

Featured Reviews

Michael Hasenfang - PeerSpot reviewer
Director, Platform Engineering - Infrastructure Systems and Automation at a computer software company with 1,001-5,000 employees
Collecting compliance data has become more efficient while managing unstructured inputs for reporting
The features that I find most valuable within Microsoft Azure Cosmos DB are probably the cost, as the cost optimization is good. The storage and queryability are good for what we're doing; it's a lot of unstructured data, so having a platform to put that in and then be able to harvest that data out for the reporting we do is essential. In terms of cost saving, it was probably easily 30 to 40% cheaper than doing a standard SQL, which is what we saw just on piloting and getting in there. We were initially thinking 20 to 25%, but we were probably more at the 35 to 40%. We are using Microsoft Azure Cosmos DB's hybrid search today. The value that it has added to my AI or search workloads is that I think it's optimized that process and made it easier. We have a lot of unstructured data coming from different dissimilar systems and different data sources, so correlating those things together and making sense of it has been very beneficial. Microsoft Azure Cosmos DB has had pretty good performance with searching through large amounts of data; it's been fast, and we haven't seen a lot of performance degradation while building larger queries and bringing in a large set of data. The dynamic auto-scale or serverless model from Microsoft Azure Cosmos DB has helped reduce costs and operational effort; however, it's hard to quantify how that plays out since you're using a shared service. It shifts my focus away from building, managing, and upgrading to adding value.
Shrikant Navelkar - PeerSpot reviewer
Director at Clover Infotech
Have achieved excellent performance and seamless integration with effective cost control in cloud solutions
When customers are migrating from Oracle Exadata Express Cloud Service and need to remove some of their test and development environment, what happens in normal virtualization is that they can just switch it off, but in ExaCS, they need to terminate the entire thing. Most of the customers are not aware of this, so they keep spending money even if they want to shut down their UAT environment or development environment, so Oracle needs to make it simpler in terms of reducing the bill on ExaCS when customers want to shut down certain environments. Today, you have to terminate the entire VM, and only then your billing will stop. The only functionality I would expect from Oracle Exadata Express Cloud Service is that if Oracle is able to support Oracle MySQL Enterprise also on Exadata, that will solve a lot of problems.

Quotes from Members

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

Pros

"Cosmos DB has helped us by providing faster response times for everything, which significantly improved our search results quality."
"For modern applications, I would recommend Microsoft Azure Cosmos DB."
"The user interface of Microsoft Azure Cosmos DB is the best part of the entire Microsoft ecosystem; I find it to be the best user interface you can ever hope for, especially when compared to AWS and GCP, which do not measure up as well."
"rate Azure support nine out of 10. They respond quickly and will help you manage costs. However, they mainly give you an overview of the issue, so they'll never have an in-depth idea of what you're doing. They aren't the owners of our product, so they don't know much about it, but they can ask you generally: What are you doing? Are you doing too many updates? How can we reduce the cost?"
"The searching capability is exceptional. It is very simple and incomparable to competitors."
"I would rate it a ten out of ten for stability."
"The most valuable feature of Microsoft Azure Cosmos DB is its real-time analytics capabilities, which allow for turnaround times in milliseconds. This is crucial for applications like fraud detection."
"We have both our SaaS app and the analytical side running without throttling issues."
"One of the most valuable parts of the solution is the high availability within the system and the performance enhancement without making any changes or fine-tuning the databases."
"I like that Oracle Exadata Express Cloud Service is easier to use and is a cost-saving solution because you won't need to hire people to run and maintain it."
"I highly recommend Oracle Exadata Express Cloud Service as a very good solution if you can afford it."
"I would rate Oracle Exadata Express Cloud Service ten out of ten for its overall solution."
"What is most valuable about this solution is there is no comparative solution by any other vendors."
"Having the prediction happen in the modular format allows you to start with a lower version of Exadata and then you can keep on upgrading it as per your requirement."
"The solution is very stable and offers great performance."
"In the cloud, Exadata is more scalable. The on-prem version was limited. It wasn't that scalable because it only came in a quarter rack, half rack, and full rack. In the cloud, it scales to what you need."
 

Cons

"There is room for improvement in Microsoft's maintenance aspect. For example, we had a major incident at the end of December where the entire South Central region was down for our application, causing many problems due to a lack of access to the database."
"A minor improvement would be enabling batch operations through the UI. Currently, to delete all documents in a collection, we must use an API, which some of my team finds inconvenient for admin tasks."
"The tool's pricing is expensive."
"The biggest problem is the learning curve and other database services like RDS."
"The integration of the on-premise solution with the cloud can be difficult sometimes."
"In that scenario, two things can be improved."
"Cosmos DB is expensive, and the RU-based pricing model is confusing."
"The integration with other solutions needs to improve because Cosmos DB's interoperability is lacking in some scenarios. For example, I'm currently implementing Fabric. That involves migrating from environments without apps, processing data and users, and taking them to Fabric."
"I feel there is a need for better integration with Google Maps and Google Earth. This is crucial for me in the geographical facilities of the environment."
"The customer's default choice is the on-premise version of this solution. Oracle needs to market the cloud version better."
"Technical support from Oracle rates at five out of ten. Oracle support is 24/7, but if one support engineer is not able to solve the issue, you have to explain the problem again."
"We use artificial intelligence for deep learning, and it would be a huge benefit to implement this in Oracle Exadata."
"Customer Service: I had no answer when asking why the Customer Support Identifier is invalid Technical Support: The Customer Support Identifier provided was invalid. This means that I had no support, unfortunately."
"The support must be faster."
"The only downside is the difficulty in monitoring, and that's why I would like to implement MySQL database."
"Oracle's support could be better."
 

Pricing and Cost Advice

"You need to understand exactly the details of how the pricing works technically to stay within reasonable pricing."
"Microsoft Azure Cosmos DB is moderately priced, where it is neither expensive nor cheap."
"Pricing is one of the solution's main features because it is based on usage, scales automatically, and is not too costly."
"Microsoft Azure Cosmos DB's licensing costs are monthly."
"It's expensive. I would rate it a seven out of ten for pricing."
"Cosmos should be cheaper. We actually intend to stop using it in the near future because the price is too high."
"Cosmos DB is expensive compared to any virtual machine based on conventional RDBMS like MySQL or PostgreSQL."
"Azure is a pay as you go subscription."
"I think Oracle pricing is usually above average market price."
"The price of this solution is very comparative to others on the market. There is no direct comparison between this solution and with something else because I do not see any other similar product."
"The tool is not cheap, but it is not really expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Legal Firm
11%
Comms Service Provider
8%
Manufacturing Company
8%
Financial Services Firm
15%
Comms Service Provider
11%
Recruiting/Hr Firm
11%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business33
Midsize Enterprise22
Large Enterprise58
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise1
Large Enterprise8
 

Questions from the Community

What is your experience regarding pricing and costs for Microsoft Azure Cosmos DB?
Microsoft Azure Cosmos DB's pricing model has aligned with my budget expectations because I can tune the RU as I need to, which helps a lot. Microsoft Azure Cosmos DB's dynamic auto-scale or server...
What needs improvement with Microsoft Azure Cosmos DB?
I have not utilized Microsoft Azure Cosmos DB multi-model support for handling diverse data types. I'm not in the position to decide if clients will use Microsoft Azure Cosmos DB or any other datab...
What is your primary use case for Microsoft Azure Cosmos DB?
We have a very large team of developers who develop a solution for our customers. In the part where they need some infrastructure on Microsoft Azure, we deploy entire environments of different type...
What is your experience regarding pricing and costs for Oracle Exadata Express Cloud Service?
Oracle is quite expensive here in Brazil. Pricing is the primary challenge we face with Oracle.
What needs improvement with Oracle Exadata Express Cloud Service?
When customers are migrating from Oracle Exadata Express Cloud Service and need to remove some of their test and development environment, what happens in normal virtualization is that they can just...
What is your primary use case for Oracle Exadata Express Cloud Service?
We have been implementing Oracle Exadata Express Cloud Service for our customers for more than 10 to 12 years for our various customers through the on-premise Exadata offerings Oracle has.
 

Also Known As

Microsoft Azure DocumentDB, MS Azure Cosmos DB
No data available
 

Overview

 

Sample Customers

TomTom, KPMG Australia, Bosch, ASOS, Mercedes Benz, NBA, Zero Friction, Nederlandse Spoorwegen, Kinectify
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Find out what your peers are saying about Microsoft Azure Cosmos DB vs. Oracle Exadata Express Cloud Service and other solutions. Updated: August 2026.
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