Amazon RDS vs Google Cloud Spanner vs Microsoft Azure SQL Database comparison

Amazon Web Services (AWS) and Google are both solutions in the Database as a Service (DBaaS) category. Amazon Web Services (AWS) is ranked #2 with an average rating of 8.4, while Google is ranked #8 with an average rating of 10.0. Amazon Web Services (AWS) holds a 13.5% mindshare in DS, compared to Google’s 7.2% mindshare. Additionally, 98% of Amazon Web Services (AWS) users are willing to recommend the solution, compared to 100% of Google users who would recommend it.

Amazon RDS

Read 58 Amazon RDS reviews

3,802 Views
3,650 Comparison Views

98% willing to recommend

Google Cloud Spanner

Read 5 Google Cloud Spanner reviews

1,281 Views
1,217 Comparison Views

100% willing to recommend

Microsoft Azure SQL Database

Read 134 Microsoft Azure SQL Database reviews

4,005 Views
3,925 Comparison Views

96% willing to recommend

Amazon RDS

Google Cloud Spanner

Microsoft Azure SQL Database

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Executive Summary

We performed a comparison between Amazon RDS, Google Cloud Spanner, and Microsoft Azure SQL Database based on real PeerSpot user reviews.

Find out what your peers are saying about Microsoft, Amazon Web Services (AWS), MongoDB and others in Database as a Service (DBaaS).

To learn more, read our detailed Database as a Service (DBaaS) Report (Updated: January 2026).

Buyer's Guide

Database as a Service (DBaaS)

January 2026

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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:

Mindshare comparison

As of February 2026, in the Database as a Service (DBaaS) category, the mindshare of Amazon RDS is 13.5%, down from 25.4% compared to the previous year. The mindshare of Google Cloud Spanner is 7.2%, up from 4.0% compared to the previous year. The mindshare of Microsoft Azure SQL Database is 10.7%, down from 16.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Database as a Service (DBaaS) Market Share Distribution
Product	Market Share (%)
Microsoft Azure SQL Database	10.7%
Amazon RDS	13.5%
Google Cloud Spanner	7.2%
Other	68.6%

Database as a Service (DBaaS)

Featured Reviews

reviewer2592669

Director Software Engineer at a computer software company with 10,001+ employees

Positive experiences with database services, with minor room for feature enhancements observed

I don't really see any disadvantages of Amazon RDS. With Oracle, I think AWS doesn't provide the RAC stability. If you have Oracle installed in your own data centers, you can set up various clusters and we can set up the RACs, but in Amazon RDS, we cannot have the RAC feature of Oracle. They could add that feature. Amazon RDS has limitations regarding RAC. If we talk about installing Oracle in RDS, we cannot have the RAC, but if you deploy Oracle on GCP, then there is probably the RAC feature available. I observed that around two or three years back, but I'm not sure whether they have added the RAC feature in AWS. Amazon RDS is expensive compared to GCP. GCP also has the same features, and although it is quite extensive and feature-rich, I see Amazon RDS as slightly expensive compared to other clouds.

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LijomonJose

System Architect at UST Global EspaÃ±a

Offers good performance to users

The tool lacks to offer AI features. In the future, I would like the product to offer AI features to users. Nowadays, we are creating small acronyms for our SQL Server. We put some templates. If I just put your name and stop it, the entire cloud can be explored, but such features are not there in Google Cloud Spanner. As a layman rather than a developer, if I create a tool or a procedure. If I write a procedure and then when you describe a procedure, a dummy procedure will be written for you, and it will be available for you as a template in SQL Server, but such kind features are not there in Google Cloud Spanner.

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Thomas Sawyer

Executive Director, Platform Architecture at Sumitomo Mitsui Banking Corporation – SMBC Group

Automatic tuning and multi-region availability have reduced manual workloads and improved performance management

The features of Microsoft Azure SQL Database that I like the most are easy scaling and high availability. I appreciate those features because it's easy to make Microsoft Azure SQL Database readily available in a multi-region infrastructure. Using Microsoft Azure SQL Database is very easy; it's much easier than SQL on-premise because I don't have to worry about deploying infrastructure, and I can rapidly deploy via infrastructure as code. I am using the automatic tuning feature in Microsoft Azure SQL Database. We are using the new feature of data encryption in Microsoft Azure SQL Database with customer-managed keys only. The reliability and stability of Microsoft Azure SQL Database platform are rock-solid; it's as good, if not better, than what our on-premise stability has been from an uptime perspective.

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Quotes from Members

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

Pros

"The solution has unique features like backup and recovery, and snapshots. It upgrades automatically. The solution offers easy analytics concerning performance metrics. Its reliability and scalability are very good. The tool's most valuable features are disaster recovery, high availability and scalability."

"The product's most valuable features are option groups, S3 integration, automated and scheduled snapshots, and cross-region replication."

"The solution’s scalability, usability, and availability are valuable to us."

"The dashboard and performance are the most valuable features of Amazon RDS."

"It significantly reduces database management overhead."

"Amazon RDS fulfills PCI requirements, which is a valuable feature for us."

"Amazon RDS handles database backup mechanisms and patch management."

"The most valuable features of the solution stem from the fact that it requires an easy setup phase, and it is also easy to use while not being too heavy on its users."

More Amazon RDS pros

"The application deployment in the cloud is the best feature of the infrastructure."

"Google Cloud Spanner is stable."

"We can scale the solution if we need to."

"The most valuable feature of the solution is its scalability. Scalability comes with two options, among which Google Cloud Spanner can scale horizontally, compared to other relational databases that scale vertically."

"It is a very scalable solution."

"In terms of ease of use, I found Microsoft Azure SQL Database as easy to use as the on-premises version; my experience was that it really was pretty seamless, I didn't have to learn any new SQL, and we're still able to access it using SSMS, the same similar interface, so it was a seamless transition."

"Their technical support is the most valuable."

"Coding does not require much effort."

"The ease of scaling the server up and down by simply pressing a few buttons in a dropdown menu has made our lives significantly more comfortable, especially as we aim to process more data this year by utilizing the cloud."

"The feature I like the most about Microsoft Azure SQL Database is that it's a managed service, which is the main reason we use it, as a global enterprise we used to spend a lot of time maintaining SQL Server and SQL Databases, and using Azure SQL allows us to leverage our people's comprehensive power to focus on more important tasks than just upgrading the SQL and doing maintenance."

"Microsoft Azure SQL Database has helped us tremendously with regards to cost and scaling, and it is just really easy to use and really easy with permissions as well through Entra ID."

"SQL Azure can integrate well with other Microsoft Windows services."

"I rate Microsoft Azure SQL Database nine out of 10."

More Microsoft Azure SQL Database pros

Cons

"They should add a feature for manual SQL patching in RDS."

"The product's high price is an area of concern where improvements are required."

"In the next release, it would be great to see RDS provide connection pooling out of the box."

"With my limited experience, I have noticed that documentation management could be improved. It could be better."

"Amazon RDS needs to have an overall dashboard where I can view all the tables in the form of pie charts and Gantt charts. The deployment is complex, and we would like to see automated scripts. It needs to incorporate performance insights."

"User interface needs improvement for using IPS and CloudWatch to scale and utilize read replicas, enabling performance insights to view query formats where the bottlenecks occur, identifying the fixes, slow queries, and missing indexes, improving the security and monitoring with alerts."

"Amazon RDS could improve by having more sophisticated. I use other solutions that have better technology for more difficult tasks."

"As a customer of Amazon RDS, you don't have super-user privileges, and that is the only drawback where improvements are required."

More Amazon RDS cons

"The tool needs to improve horizontal scaling."

"The tool lacks to offer AI features."

"The cost can be a bit high."

"Google came up with something called Cloud Spanner Emulator, which fails to work like the real product if I want to develop some code and run a database locally on my machine."

"I want to improve the deployment of cameras and surveillance infrastructure."

"I want the pricing to be improved."

"The initial setup was very complex."

"The default 1433 port for communication should be customizable because most hacks or attacks are attempted when creating any application or database on the default port."

"It would help if the solution was more secure."

"Adding users to Azure SQL could be easier. You need to script it out, but it would be nice if it had a UI where you can click and add them. It's not a major thing because we script things all the time, but it would be a minor thing that helps us."

"Its price could be better. It is expensive. I am not sure if Microsoft Master Data Services is included in this. If not, Master Data Services can be integrated with Azure SQL. I have only used Master Data Services on-premises."

"Azure SQL had a bit of a learning curve to start, but it was fairly simple once I understood how to develop it."

"Microsoft Azure SQL Database could be improved by offering an easier way to view all existing roles in the database without needing complex queries found online."

More Microsoft Azure SQL Database cons

Pricing and Cost Advice

"Amazon RDS is not a very expensive solution."

"The price of Amazon RDS is expensive."

"The solution is fairly priced."

"The product is expensive."

"The cost is manageable because you can see the expense associated with each instance and utilize tools for tagging and cost control."

"The solution is expensive."

"The cost of using this solution is similar to that of having your own data center."

"The solution's price is good."

More Amazon RDS pricing and cost advice

"Google Cloud Spanner is an expensive solution."

"The solution is expensive."

"Price-wise, I heard that Google Cloud Spanner is on the higher side."

"It is expensive."

"We have a three-year contract. The cost was somewhere around $70-80,000 for the original deployment, which was about two years ago"

"We have had some issues with the licensing of the solution."

"The licensing for this solution is based on subscription."

"The price could be slightly cheaper."

"SQL Azure's licensing cost is expensive."

"SQL Azure is an expensive solution."

"I find that they are relatively expensive, especially when compared to AWS, where the prices are notably lower."

"When looking at the long-term expenses associated with running software on an on-premises server, the costs are almost equivalent but when we include insurance for devices, onsite fees for servers, and other related costs, we may find that this is a cost-effective solution."

More Microsoft Azure SQL Database pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

11%

Financial Services Firm

10%

University

Healthcare Company

Financial Services Firm

20%

Computer Software Company

12%

Healthcare Company

10%

Media Company

Financial Services Firm

13%

Marketing Services Firm

Computer Software Company

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	22
Midsize Enterprise	15
Large Enterprise	23

No data available

By reviewers
Company Size	Count
Small Business	59
Midsize Enterprise	17
Large Enterprise	61

Questions from the Community

What do you like most about Amazon RDS?

The product's installation phase is easy.

See all answers

What is your experience regarding pricing and costs for Amazon RDS?

The pricing for Amazon RDS is reasonable.

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What needs improvement with Amazon RDS?

Currently, I cannot think of any major improvements. Perhaps more platforms in terms of database engine versions woul...

See all answers

What is your primary use case for Google Cloud Spanner?

Google Cloud Spanner has all the features of a traditional relational database, including schemas, SQL queries, ACID ...

See all answers

What is your experience regarding pricing and costs for Google Cloud Spanner?

Price-wise, I heard that Google Cloud Spanner is on the higher side. I am not sure if this is a rumor or if it's fake...

See all answers

What needs improvement with Google Cloud Spanner?

The tool lacks to offer AI features. In the future, I would like the product to offer AI features to users. Nowadays,...

See all answers

What do you like most about SQL Azure?

The automated scalability feature of SQL Azure has proven to be highly beneficial, particularly when deployed in the ...

See all answers

What is your experience regarding pricing and costs for SQL Azure?

I would say I am at a basic experience level with the pricing, setup costs and licensing because while I am the admin...

See all answers

What needs improvement with SQL Azure?

I have no comments at the moment on how Microsoft Azure SQL Database can be improved. I have no comments on additiona...

See all answers

Comparisons

MongoDB Atlas vs Amazon RDS

Compared 19% of the time

Google Cloud SQL vs Amazon RDS

Compared 15% of the time

Oracle Database as a Service vs Amazon RDS

Compared 10% of the time

Oracle Exadata Cloud at Customer vs Amazon RDS

Compared 5% of the time

Yugabyte Cloud vs Amazon RDS

Compared 4% of the time

More Amazon RDS Competitors

Oracle Database as a Service vs Google Cloud Spanner

Compared 20% of the time

Yugabyte Platform vs Google Cloud Spanner

Compared 15% of the time

MongoDB Atlas vs Google Cloud Spanner

Compared 14% of the time

Microsoft Azure Cosmos DB vs Google Cloud Spanner

Compared 8% of the time

SingleStore vs Google Cloud Spanner

Compared 6% of the time

More Google Cloud Spanner Competitors

Google Cloud SQL vs Microsoft Azure SQL Database

Compared 20% of the time

MongoDB Atlas vs Microsoft Azure SQL Database

Compared 13% of the time

Azure Database for PostgreSQL vs Microsoft Azure SQL Database

Compared 9% of the time

Microsoft Azure Cosmos DB vs Microsoft Azure SQL Database

Compared 7% of the time

vCloud Air vs Microsoft Azure SQL Database

Compared 3% of the time

More Microsoft Azure SQL Database Competitors

Product Reports

Buyer's Guide

Amazon RDS

January 2026

Download Amazon RDS product report

Buyer's Guide

Database as a Service (DBaaS)

January 2026

Download Google Cloud Spanner product report

Buyer's Guide

Microsoft Azure SQL Database

January 2026

Download Microsoft Azure SQL Database product report

Also Known As

RDS

Google Spanner

No data available

Overview

Amazon Relational Database Service (Amazon RDS) is a web service that makes it easier to set up, operate, and scale a relational database in the cloud. It provides cost-efficient, resizeable capacity for an industry-standard relational database and manages common database administration tasks.

Amazon Web Services (AWS)

Cloud Spanner is the first and only relational database service that is both strongly consistent and horizontally scalable. With Cloud Spanner you enjoy all the traditional benefits of a relational database: ACID transactions, relational schemas (and schema changes without downtime), SQL queries, high performance, and high availability. But unlike any other relational database service, Cloud Spanner scales horizontally, to hundreds or thousands of servers, so it can handle the highest of transactional workloads. With automatic scaling, synchronous data replication, and node redundancy, Cloud Spanner delivers up to 99.999% (five 9s) of availability for your mission critical applications. In fact, Google’s internal Spanner service has been handling millions of queries per second from many Google services for years.

Google

Microsoft Azure SQL Database is a relational database-as-a-service that delivers predictable performance, scalability, business continuity, data protection, and near-zero administration to cloud developers and solution architects. This is the deep technical library for Azure SQL Database.

Microsoft

Sample Customers

Edmodo

Streak, Optiva, Mixpanel

adnymics GmbH, LG CNS, Centrebet, netfabb GmbH, MedPlast, Accelera Solutions, Sochi Organizing Committee, realzeit GmbH

Buyer's Guide

Database as a Service (DBaaS)

January 2026

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