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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

"Cosmos is preferred because of its speed, robustness, and utilization. We have all the merchandising information in Cosmos DB, which provides concrete and optimized data when searching for new products on the site. It is faster than other relational databases."
"Azure Cosmos DB's graph queries are its most valuable feature. Although I have not yet explored vector search, it's coming to Cosmos DB, and I plan to look into it. Having data in a flat file format in a document database speeds up processes, which is the primary purpose. Additionally, Cosmos DB's use of the Mongo platform makes it intuitive and cost-effective."
"It has been very efficient so far. The team has been using it for quite a while. I am new to the team, but they always talk about how efficient it is."
"Its wide support to the ecosystem is valuable. We can use this database with a lot of use cases, and that's one of the reasons why we prefer it. We have a lot of vendors, databases, and use cases, and wherever possible, we are trying to standardize databases. It is also secure."
"The dynamic autoscale or serverless model of Microsoft Azure Cosmos DB has indeed helped reduce our costs and operational effort by allowing us to scale horizontally in a straightforward manner according to our needs."
"The solution is scalable, and we intend to increase our usage."
"Microsoft Azure Cosmos DB's dynamic auto-scale and serverless model have helped reduce costs and operational efforts for our organization."
"Azure Cosmos DB helped improve the quality of our search results."
"With this cloud service, a development team can get a database immediately, without long negotiation with other services."
"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 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."
"The solution is very stable and offers great performance."
"The performance of the tool is valuable."
"It is a scalable product."
"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

"One of the most frustrating aspects of Microsoft Azure Cosmos DB right now is that you can only store one vector per document."
"In Microsoft manufacturing, managers really need to know about the product."
"From a scalability perspective, the key database has to be optimized in a better way that can support auto-scaling architecture or scalability architecture."
"The initial setup was difficult."
"The biggest problem is the learning curve and other database services like RDS."
"Performance issues do not occur frequently, but I occasionally face performance issues with Microsoft Azure Cosmos DB."
"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."
"There are some disadvantages as it is costly compared to other NoSQL databases. It has a complex pricing model and has a strict partitioning strategy."
"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 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 product's installation process needs improvement. It could be more accessible."
"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 solution's pricing could be improved."
"The support must be faster."
"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."
"The customer's default choice is the on-premise version of this solution. Oracle needs to market the cloud version better."
 

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."
"We are not consuming so much yet since we are at the beginning of using this solution. I would rate the pricing of Microsoft Azure Cosmos DB a six out of ten."
"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."
"The solution is very expensive."
"Its price is in the middle, neither too low nor too high."
"The price of Microsoft Azure Cosmos DB could be a bit lower."
"There is a licensing fee."
"Everything could always be cheaper. I like that Cosmos DB allows us to auto-scale instead of pre-provisioning a certain capacity. It automatically scales to the demand, so we only pay for what we consume."
"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%
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.