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.

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

"I use Amazon RDS to support scalability, with multi-AZ support being an essential aspect."

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

"The product solved our DevOps and admin problems."

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

"Amazon RDS is easy to maintain and easy to deploy."

"The most valuable feature of Amazon RDS is its performance."

"Stability-wise, I rate the solution a nine out of ten...Scalability-wise, I rate the solution a nine out of ten."

"It makes it easy to administer the database. It helps to scale your database by providing Read Replicas, which reduce transaction time. It is highly available and durable which helps in disaster recovery and management."

More Amazon RDS pros

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

"It is a very scalable solution."

"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."

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

"Google Cloud Spanner is stable."

"Microsoft Azure SQL Database has significantly improved our operations by allowing us to extract data and generate comprehensive reports in Power BI."

"The features of Microsoft Azure SQL Database that I find most valuable are the ability to scale it up and down dynamically with customer load, which is necessary because during the day or business hours when there's more load, we need to scale it up and scale it back down at night for cost efficiency."

"Microsoft Azure SQL Database is fairly easy to use and set up for our DBA teams, who use it for various applications and tools like RabbitMQ."

"The Power Virtual Agents help us go through documents and load data into SQL."

"Microsoft Azure SQL Database is integrated into other Azure capabilities and has a great foundation being on SQL Server with a long history of security, performance, and usability from a DBA perspective."

"The tool set is familiar since I've used SQL Server on-premises for quite a few years."

"Great auto-scaling and security features."

"Cost savings are the most valuable. The DR/high availability is also valuable. The failover group with the built-in DR/high availability features is probably one of the easiest things."

More Microsoft Azure SQL Database pros

Cons

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

"It would be better if it integrated seamlessly with Microsoft products. Our clients use the Microsoft Tally application server. We already tried to create a reputation from, for example, an on-premises environment from our client to Amazon RDS using Microsoft Tally server, and we couldn't do that because we didn't have a strong user in RDS. We couldn't create a reputation from an on-premises environment from the Microsoft Tally server to RDS. I think that it would be a good implementation, and it would help us with this case."

"The solution's version upgrade and performance could be improved."

"The setup might be a bit challenging for multi-level applications."

"If we do not keep track of our costs, we might face some problems."

"You can only get access from the sales support. That means if you want to buy something or renew your subscription or upgrade, all these services are easily available. Yet, if you would like to get some technical support, you have to pay for it. You have to pay for an additional subscription."

"If Amazon RDS can be provided as a service platform, it would be beneficial for years. Instead of focusing on infrastructure, they can assist backend engineers and those with varying technical expertise in utilizing it effectively. It would be helpful if Amazon could provide a more predictable pricing strategy."

"They could provide better integration for the solution with Microsoft products."

More Amazon RDS cons

"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."

"The tool needs to improve horizontal scaling."

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

"The tool lacks to offer AI features."

"The cost can be a bit high."

"Improvement could be made in the performance tools, offering a better overview of core issues like process activity and latency, as we currently rely on third-party tools and SQL jobs for monitoring and alerts. A comprehensive built-in solution for performance analysis would be beneficial."

"We need improvement in the latency between availability zones. The managed SQL MI does not allow us to control the zone it runs in, which affects latency."

"The solution is somewhat user-friendly, but it's limited by the lack of full backward compatibility."

"One area for improvement could be expanding the search queries using vectors or AI inside the database."

"SQL Azure could improve by adding more features."

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

"The problem is the automated configuration."

"It's a little bit limited in terms of functionality."

More Microsoft Azure SQL Database cons

Pricing and Cost Advice

"The cost depends on the kind of instance we use."

"The solution is expensive."

"I would rate the tool's pricing an eight out of ten."

"The price of Amazon RDS is reasonable."

"The platform pricing is on the higher side, but given its capabilities and ease of use, it remains competitive."

"Amazon RDS is cheaper compared to other tools."

"We are paying for a service license."

"The solution's pricing needs improvement."

More Amazon RDS pricing and cost advice

"It is expensive."

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

"Google Cloud Spanner is an expensive solution."

"The solution is expensive."

"It is quite expensive. I would definitely recommend not using the pay-as-you-go model because this will just mean all your money will go to Microsoft. So, really make sure to control resource usage as much as possible."

"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."

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

"SQL Azure's licensing cost is expensive."

"The cost is around $2,000 per month."

"I would like it to be cheaper, but comparatively, it is reasonably priced."

"The solution is more cost-effective than Google BigQuery. Compared to Google BigQuery, downloading data can be more expensive."

"We have the licensing fee, and we are also paying a third party to maintain it with an SLA. There is no infrastructure cost, but its running costs are higher than expected. There is the cost of the Azure cloud, which is pricier than expected, but it is not specific to SQL Azure. It is specific to the cloud. You expect it to be cheaper, but it is more expensive to run it."

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

Redis vs Google Cloud Spanner

Compared 5% 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 12% 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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