Microsoft Azure Cosmos DB vs Oracle Exadata Express Cloud Service comparison

Microsoft Azure Cosmos DB vs. Oracle Exadata Express Cloud Service

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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

Microsoft Azure Cosmos DB

Ranking in Database as a Service (DBaaS)

4th

Average Rating

8.2

Reviews Sentiment

6.9

Number of Reviews

109

Ranking in other categories

NoSQL Databases (2nd), Managed NoSQL Databases (1st), Vector Databases (1st)

Oracle Exadata Express Clou...

Ranking in Database as a Service (DBaaS)

13th

Average Rating

8.0

Reviews Sentiment

6.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of May 2026, in the Database as a Service (DBaaS) category, the mindshare of Microsoft Azure Cosmos DB is 4.8%, up from 1.6% compared to the previous year. The mindshare of Oracle Exadata Express Cloud Service is 1.8%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Database as a Service (DBaaS) Mindshare Distribution
Product	Mindshare (%)
Microsoft Azure Cosmos DB	4.8%
Oracle Exadata Express Cloud Service	1.8%
Other	93.4%

Database as a Service (DBaaS)

Featured Reviews

reviewer2724105

Senior Director of Product Management at a tech vendor with 1,001-5,000 employees

Provides super sharp latency, excellent availability, and the ability to effectively manage costs across different tenants

For integrating Microsoft Azure Cosmos DB with other Azure products or other products, there are a couple of challenges with the current system. Right now, the vectors are stored as floating-point numbers within the NoSQL document, which makes them inefficiently large. This leads to increased storage space requirements, and searching through a vast number of documents in the vector database becomes quite costly in terms of RUs. While the integration works well, the expense associated with it is relatively high. I would really like to see a reduction in costs for their vector search, as it is currently on the expensive side. The areas for improvement in Microsoft Azure Cosmos DB are vector pricing and vector indexing patterns, which are unintuitive and not well described. I would also like to see the parameters of Fleet Spaces made more powerful, as currently, it's somewhat lightweight. I believe they've made those changes intentionally to better understand the cost model. However, we would like to take a more aggressive approach in using it. One of the most frustrating aspects of Microsoft Azure Cosmos DB right now is that you can only store one vector per document. Additionally, you must specify the configuration of that vector when you create an instance of Microsoft Azure Cosmos DB. Once the database is set up, you can't change the vector configuration, which is incredibly limiting for experimentation. You want the ability to try different settings and see how they perform, as there are numerous use cases for storing more than one vector in a document. While interoperability within the vector database is acceptable—for example, I can search for vectors—I still desire a richer set of configuration options.

Read full review

Shrikant Navelkar

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.

Read full review

Quotes from Members

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

Pros

"Because our complete setup is in Microsoft, we have access to the most premium Microsoft assistance, available 24 hours a day, seven days a week."

"I like the scalability, there aren't any constraints for posting in the geolocation, and I also like the SQL architecture."

"Scaling the workloads is one of the key advantages of Cosmos, preventing the database from becoming a performance bottleneck."

"It works reasonably fast. You can retain the original format of the document as received by the third-party system."

"The most valuable feature of Microsoft Azure Cosmos DB is its real-time analytics capabilities, which allow for turnaround times in milliseconds."

"With Azure being our main cloud, the valuable features of Microsoft Azure Cosmos DB include integration with other Azure products that we're using and governance inside Azure. For integration with other products inside the Azure cloud, it was a better choice."

"Microsoft Azure Cosmos DB is very fast. Data retrieval and data storage are very quick."

"The speed is impressive, and integrating our power-up database with Kafka was an improvement."

More Microsoft Azure Cosmos DB pros

"Exadata is a highly stable and mature solution."

"The solution is very stable and offers great performance."

"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."

"With this cloud service, a development team can get a database immediately, without long negotiation with other services."

"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."

"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."

"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."

More Oracle Exadata Express Cloud Service pros

Cons

"The cost is a concern. Microsoft Azure Cosmos DB did not decrease our total cost of ownership. From the standpoint of the old way of doing DBA operations, it did, but our cloud cost increased significantly."

"We'd like to avoid full DR replication if possible, as this would result in significant cost savings."

"We expect Cosmos DB to lead on that. There is potential for improved security features, which is important for data storage, especially for Dell Technologies."

"I have been a devoted Microsoft fan, but Redis DB's memory caching capabilities are really making progress. Even if Cosmos DB is continuously improving and is quite advanced in the field of internal memory optimization, I would still recommend Redis DB to a customer."

"Better documentation on how to integrate with other components would be helpful because I was struggling with this."

"If you want to bring the data from AWS, you must pay data egress costs. That's a pain point."

"Microsoft Azure Cosmos DB's pricing model is complicated, which people don't understand."

"It is easy to use, but optimization has been a mixed experience. It has been more of trying to figure out how to do so. We have not found much support there, so we have to come up with our own way of optimizing it in different ways. That is one area of improvement."

More Microsoft Azure Cosmos DB cons

"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."

"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."

"Oracle's support could be better."

"The product's installation process needs improvement. It could be more accessible."

"The support must be faster."

"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."

More Oracle Exadata Express Cloud Service cons

Pricing and Cost Advice

"The pricing and licensing model was initially difficult to understand, but as soon as I learned what was going on and how it was priced, it was pretty easy."

"Azure is a pay as you go subscription."

"Cosmos DB gave us three accounts for $400. We pay according to the usage."

"The pricing for Microsoft Azure Cosmos DB is good. Initially, it seemed like an expensive way to manage a NoSQL data store, but so many improvements that have been made to the platform have made it cost-effective."

"When we've budgeted for our resources, it's one of the more expensive ones, but it's still not very expensive per month."

"Our experience with the pricing and setup cost is that it aligns with what we expect based on the pricing we see. However, I would absolutely like it to be less if possible."

"The customer had a high budget, but it turned out to be a little bit cheaper than what they expected. I am not sure how much they have spent so far, but they are satisfied with the pricing."

"If you are a small organization or startup building from scratch without the Microsoft Startup Founder Club support, it could be expensive."

More Microsoft Azure Cosmos DB pricing and cost advice

"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

12%

Legal Firm

12%

Comms Service Provider

Manufacturing Company

Financial Services Firm

18%

Recruiting/Hr Firm

12%

Comms Service Provider

12%

Educational Organization

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	33
Midsize Enterprise	22
Large Enterprise	58

By reviewers
Company Size	Count
Small Business	3
Midsize Enterprise	1
Large Enterprise	8

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?

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.

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Compared 18% of the time

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Compared 10% of the time

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Product Reports

Microsoft Azure Cosmos DB

Download Microsoft Azure Cosmos DB product report

Oracle Exadata Express Cloud Service

Download Oracle Exadata Express Cloud Service product report

Oracle Exadata Express Cloud Service report

Also Known As

Microsoft Azure DocumentDB, MS Azure Cosmos DB

No data available

Overview

Microsoft Azure Cosmos DB offers scalable, geo-replicated, multi-model support with high performance and low latency. It provides seamless Microsoft service integration, benefiting those needing flexible NoSQL, real-time analytics, and automatic scaling for diverse data types and quick global access.

Azure Cosmos DB is designed to store, manage, and query large volumes of both unstructured and structured data. Its NoSQL capabilities and global distribution are leveraged by organizations to support activities like IoT data management, business intelligence, and backend databases for web and mobile applications. While its robust security measures and availability are strengths, there are areas for improvement such as query complexity, integration with services like Databricks and MongoDB, documentation clarity, and performance issues. Enhancements in real-time analytics, API compatibility, cross-container joins, and indexing capabilities are sought after. Cost management, optimization tools, and better support for local development also require attention, as do improvements in user interface and advanced AI integration.

What are the key features of Azure Cosmos DB?

Scalability: Effortlessly handles scaling for large workloads.
Geo-replication: Provides global data access with low latency.
Multi-model Support: Compatible with diverse data types.
NoSQL Flexibility: Offers a non-relational database experience.
Real-time Analytics: Facilitates data-driven decision-making.
Automation: Simplifies scaling and maintenance processes.

What benefits can users expect from Cosmos DB?

High Performance: Ensures rapid processing and low latency.
Ease of Use: Features a user-friendly interface enhancing deployment speed.
Seamless Integration: Connects effortlessly with Microsoft services.
Security: Offers robust measures to protect data integrity.
Consistent Availability: Ensures continuous access to data worldwide.

Industries use Azure Cosmos DB to support business intelligence and IoT data management, using its capabilities for backend databases in web and mobile applications. The platform's scalability and real-time analytics benefit sectors like finance, healthcare, and retail, where managing diverse datasets efficiently is critical.

Microsoft

Oracle Exadata Express Cloud Service enables cost-effective scalability, performance, and security without third-party software, ideal for database consolidation and cloud deployments.

Oracle Exadata Express offers scalable infrastructure that enhances performance while maintaining high availability and robust security. With its integration with Oracle Linux, it minimizes maintenance needs and provides excellent reliability. It supports efficient data handling, stored procedures, and rapid resource expansion. Users prefer it for optimizing database deployments, processing transactions, and managing data across large user bases. Despite its strengths, it requires improvements in compliance with European data regulations, AI capabilities, billing process, and integration with platforms like Oracle MySQL Enterprise and Oracle GoldenGate.

What features does it offer?

Scalable Infrastructure: Delivers cost control and efficient resource management.
Enhanced Performance: Optimizes data processing and transaction handling.
High Availability: Ensures continuous access to critical applications.
Robust Security: Protects data without reliance on third-party solutions.
Oracle Linux Compatibility: Simplifies system maintenance and support.

What benefits and ROI should users look for?

Ease of Use: Simplifies deployment and maintenance.
Resource Expansion: Facilitates quick adaptation to changing demands.
High Performance: Provides unmatched processing power against competitors.
Scalability: Supports growth without sacrificing reliability.

In sectors like banking and insurance, Oracle Exadata Express is used to enhance application performance and manage vast data sets. Its high availability and efficiency make it suitable for handling critical applications, allowing companies to avoid in-house server deployments for secure, cloud-based operations.

Oracle

Sample Customers

TomTom, KPMG Australia, Bosch, ASOS, Mercedes Benz, NBA, Zero Friction, Nederlandse Spoorwegen, Kinectify

TAFEL LEIPZIG, AS ONE

Microsoft Azure Cosmos DB vs. Oracle Exadata Express Cloud Service