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Azure Database for PostgreSQL vs MongoDB comparison

 

Comparison Buyer's Guide

Executive Summary

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
7.6
Azure Database for PostgreSQL offers significant cost savings and efficiency improvements, reducing ownership costs by eliminating expensive licenses.
Sentiment score
5.8
User experiences with MongoDB ROI vary, from significant performance boosts to uncertainty and mixed returns due to adoption challenges.
It offers at least 25 percent cost savings compared to maintaining on-premises databases.
Now, we use embedded PostgreSQL vectors, which will undoubtedly reduce the TCO by using a much more cost-effective solution.
We've reduced our total ownership cost because we are not spending on expensive SQL server licenses.
 

Customer Service

Sentiment score
7.4
Users praise Microsoft Learn's documentation, benefit from fast support response, and find engineering engagement insightful for urgent issues.
Sentiment score
6.5
MongoDB's support is well-regarded for community and online resources, with paid users noting efficient but variable response times.
Once we open a support case, we have people engaged within about 20 minutes, especially for a Sev 1 issue.
The documentation and training we've received through Microsoft Learn on how to migrate, deploy, and manage the solution is exceptional.
We handle most implementations in-house, without extensive reliance on Microsoft's technical support.
 

Scalability Issues

Sentiment score
7.9
Azure Database for PostgreSQL efficiently scales workloads with FlexServer, offering easy resizing for large enterprises and government projects.
Sentiment score
7.6
MongoDB is praised for high scalability, efficient data management, accommodating growth, though challenges exist with replication and heavy workloads.
However, we can see how well it scales after we deploy it for some large enterprise customers or big government organizations.
The scaling options with FlexServer provide us with the flexibility we need based on application complexity.
We can scale up compute and scale it down, but once storage is allocated, there is no way to scale it back down.
MongoDB is highly scalable.
 

Stability Issues

Sentiment score
7.0
Azure Database for PostgreSQL is stable with no latency issues, though it may crash during peak usage without auto-healing.
Sentiment score
7.8
MongoDB is highly rated for stability, with minor issues manageable through optimizations, not impacting overall reliability assessments.
There is a stability issue where, if the database usage peaks quickly, it may crash and require intervention to restore functionality.
We have generative AI applications, and we have not noticed any latency.
Overall, I have not encountered any real latency issues or stability concerns.
 

Room For Improvement

Azure Database for PostgreSQL needs faster scaling, better reliability, extensions, user management, cost efficiency, support, and error detection.
MongoDB requires better BI integration, SQL queries, security, stability, scalability, cost-efficiency, and improved documentation and training resources.
It does not presently support knowledge graph functionalities as Neo4j does.
Azure Database for PostgreSQL can be improved by allowing quicker scaling without blips.
I believe there could be improvements in the mirroring part and Change Data Capture (CDC).
While solutions for other databases like SQL or PostgreSQL already exist, MongoDB requires additional integrations for developing AI solutions.
 

Setup Cost

Enterprise buyers appreciate Azure's cost-efficient, pay-as-you-go pricing for PostgreSQL, reducing on-premises database costs significantly.
MongoDB offers affordable options compared to Oracle, with cost-effective cloud subscriptions but potentially pricier on-premises features.
We've reduced costs by 60 percent compared to maintaining on-premises solutions.
The pay-as-you-go pricing model positively affects database-related costs by allowing us to start small and scale as needed.
The pay-as-you-go model works well for us.
We use the free version of MongoDB, so there are no licensing costs.
 

Valuable Features

Azure Database for PostgreSQL offers seamless integration, robust networking, efficient AI tools, and strong security with a positive cost-benefit ratio.
MongoDB offers scalability, flexibility, JSON storage, ease of use, high availability, powerful features, and strong community support for diverse applications.
My takeaway as a CTO is that they're comfortable with the security posture, the features, the observability, alerts, and now it integrates into the rest of the Azure landscape.
The query analyzers help me find out what's happening in each of the queries.
The most valuable features of Azure Database for PostgreSQL are its networking capabilities, which allow for integration with other Azure services.
It offers flexibility in schema adaptation, allowing us to change the schema and add new data points.
 

Categories and Ranking

Azure Database for PostgreSQL
Ranking in Open Source Databases
10th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
9
Ranking in other categories
Database as a Service (DBaaS) (8th)
MongoDB
Ranking in Open Source Databases
5th
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
79
Ranking in other categories
NoSQL Databases (1st), Managed NoSQL Databases (9th)
 

Featured Reviews

Daniel Amini - PeerSpot reviewer
An incredibly powerful industry leader that enabled us to build critical pieces of national infrastructure
Azure Database is simple and easy to use. We followed the prescribed training and upskilled 10 engineers. They think it's straightforward. They've already got PostgreSQL skills to optimize the solution, so they know what to do. It was easy to get started quickly and become effective. My team speaks highly of the platform's observability and monitoring features. It's as efficient as an enterprise needs it to be and. has all of the tooling and telemetry necessary to run an enterprise database. We take security seriously. The team has looked at the security features, and nothing has been flagged to us. My takeaway as a CTO is that they're comfortable with the security posture, the features, the observability, alerts, and now it integrates into the rest of the Azure landscape. The OpenAI integration and extensions have massively simplified integrating AI into a database. PostgreSQL's native vector capabilities are also incredibly powerful.
Uzair Faruqi - PeerSpot reviewer
Transforms data flow with adaptable schema and smooth public cloud deployment
One of our business units uses MongoDB, and we developed an ETL pipeline that extracts data from MongoDB and transfers it into our data warehouse MongoDB is a NoSQL database that is similar to a document database. It offers flexibility in schema adaptation, allowing us to change the schema and…
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Top Industries

By visitors reading reviews
Manufacturing Company
20%
Marketing Services Firm
17%
Financial Services Firm
15%
Educational Organization
8%
Financial Services Firm
19%
Computer Software Company
15%
University
7%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What is your experience regarding pricing and costs for Azure Database for PostgreSQL?
Pricing is affordable for us. PostgreSQL is good and affordable for our needs.
What needs improvement with Azure Database for PostgreSQL?
While the flexibility of the server for financial reasons is understandable, better switching between primary and backup would make transitions smoother. I noticed an issue where the primary refuse...
What is your primary use case for Azure Database for PostgreSQL?
We started using Azure Database for PostgreSQL ( /products/azure-database-for-postgresql-reviews ) about five to six years ago. Initially, we were doing an on-premises Kubernetes ( /products/kubern...
What do you like most about MongoDB?
MongoDB's approach to handling data in documents rather than traditional tables has been particularly beneficial.
What is your experience regarding pricing and costs for MongoDB?
We use the free version of MongoDB, so there are no licensing costs.
What needs improvement with MongoDB?
There is room for improvement in integrating MongoDB with agentive AI solutions. While solutions for other databases like SQL or PostgreSQL ( /products/postgresql-reviews ) already exist, MongoDB r...
 

Overview

 

Sample Customers

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Find out what your peers are saying about Azure Database for PostgreSQL vs. MongoDB and other solutions. Updated: April 2025.
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