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Microsoft Azure Cosmos DB vs Oracle Exadata Express Cloud Service comparison

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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
7.0
Number of Reviews
113
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 September 2026, in the Database as a Service (DBaaS) category, the mindshare of Microsoft Azure Cosmos DB is 4.9%, up from 3.1% compared to the previous year. The mindshare of Oracle Exadata Express Cloud Service is 2.1%, up from 1.0% 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 Service2.1%
Other93.0%
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

"The most valuable aspect of Cosmos DB is its performance."
"We chose Azure Cosmos DB initially because of the type of data that we needed to store. We have a schema that is very nondeterministic and flexible. It is always changing based on whatever data we need to acquire from different devices, so we needed a document store with a flexible schema."
"Microsoft Azure Cosmos DB is fast, and its performance is good compared to normal SQL DB."
"The solution is extremely user-friendly and easy to navigate."
"Microsoft Azure Cosmos DB has helped decrease my company's total cost of ownership; it's easier because we have less to maintain, we're not trying to set up multiple SQL servers with replication and everything, and centralization helps a lot."
"Our customer is very satisfied with it."
"Cosmos DB is a document database that stores data in JSON format for faster retrieval of unstructured data. I personally appreciate the speed, which is significantly better for unstructured data, especially since Cosmos DB had JSON as a data type early on."
"Microsoft Azure Cosmos DB is a Microsoft solution specifically, but we can develop with different developer kits for different databases."
"The solution is very stable and offers great performance."
"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."
"What is most valuable about this solution is there is no comparative solution by any other vendors."
"I would rate Oracle Exadata Express Cloud Service ten out of ten for its overall solution."
"The performance of the tool is valuable."
"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."
"Exadata is a highly stable and mature solution."
"I highly recommend Oracle Exadata Express Cloud Service as a very good solution if you can afford it."
 

Cons

"Sometimes, the solution's access request takes time, which should be improved."
"It should offer a simple user interface for querying Microsoft Azure Cosmos DB."
"Azure Cosmos DB for NoSQL has a less developed interface and fewer SQL commands than MongoDB, and its community support is also smaller."
"Microsoft Azure Cosmos DB's pricing model is complicated, which people don't understand."
"New features can be included and its stability can be further improved."
"It is somewhat complex to use and understand Microsoft Azure Cosmos DB."
"In the long run, there should be an addition of more features, especially because this space is evolving quickly. It all boils down to how many more features you are adding, how many integrations you are supporting, and how many more APIs you have that are standard APIs."
"I have to say technical support is not very good as it takes too long. Sometimes it can take them two or three days to respond to your ticket."
"We use artificial intelligence for deep learning, and it would be a huge benefit to implement this in Oracle Exadata."
"Oracle's support could be better."
"The customer's default choice is the on-premise version of this solution. Only when Oracle or the partners like us, can explain to customers the cloud value proposition, and if the compliance authorities allow, they can look into this cloud solution. It will take some time for Oracle to change its perception of customers' de-facto standards. Exadata used to be treated as a black box, which is not the case now. The customer is aware of what is happening inside, how the configurations have been made, and what patching has been applied. Oracle needs to market the cloud version better."
"The only downside is the difficulty in monitoring, and that's why I would like to implement MySQL database."
"Scaling Oracle Exadata Express Cloud Service can be done, but the process is a little tedious, which could be an area for improvement in the solution."
"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."
"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."
"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."
 

Pricing and Cost Advice

"It is cost-effective. They offer two pricing models. One is the serverless model and the other one is the vCore model that allows provisioning the resources as necessary. For our pilot projects, we can utilize the serverless model, monitor the usage, and adjust resources as needed."
"Microsoft Azure Cosmos DB is moderately priced, where it is neither expensive nor cheap."
"Azure Cosmos DB is generally a costly resource compared to other Azure resources. It comes with a high cost. We have reserved one thousand RUs. Free usage is also limited."
"Cosmos DB is expensive compared to any virtual machine based on conventional RDBMS like MySQL or PostgreSQL."
"Cosmos DB is a highly cost-optimized solution when used correctly."
"Cosmos should be cheaper. We actually intend to stop using it in the near future because the price is too high."
"Cosmos DB's pricing structure has significantly improved in recent months, both in terms of its pricing model and how charges are calculated."
"For the cloud, we don't pay for the license, but for the on-prem versions, we do pay."
"The tool is not cheap, but it is not really expensive."
"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."
"I think Oracle pricing is usually above average market price."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Outsourcing Company
11%
Legal Firm
10%
Manufacturing Company
7%
Comms Service Provider
13%
Financial Services Firm
13%
Outsourcing Company
13%
Recruiting/Hr Firm
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business35
Midsize Enterprise24
Large Enterprise59
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?
I have knowledge about the pricing, setup cost, and licensing aspect of Microsoft Azure Cosmos DB.
What needs improvement with Microsoft Azure Cosmos DB?
I would see improvements in Microsoft Azure Cosmos DB, particularly concerning integration with more tiers. They should integrate products like IBM Watson for analytics and offer more options for e...
What is your primary use case for Microsoft Azure Cosmos DB?
I have worked with databases like Azure SQL Database, Cosmos DB, and PostgreSQL. We had a migration where our customer wanted solutions like Microsoft Azure Cosmos DB, where they desired high avail...
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
TAFEL LEIPZIG, AS ONE
Find out what your peers are saying about Microsoft Azure Cosmos DB vs. Oracle Exadata Express Cloud Service and other solutions. Updated: September 2026.
913,806 professionals have used our research since 2012.