Google Cloud Spanner vs Microsoft Azure SQL Database comparison

Google and Microsoft are both solutions in the Database as a Service (DBaaS) category. Google is ranked #9 with an average rating of 9.0, while Microsoft is ranked #1 with an average rating of 8.7. Google holds a 4.4% mindshare in DS, compared to Microsoft’s 15.9% mindshare. Additionally, 100% of Google users are willing to recommend the solution, compared to 96% of Microsoft users who would recommend it.

Google Cloud Spanner

Read 5 Google Cloud Spanner reviews

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649 Comparison Views

100% willing to recommend

Microsoft Azure SQL Database

Read 117 Microsoft Azure SQL Database reviews

6,648 Views
2,858 Comparison Views

96% willing to recommend

Google Cloud Spanner

Microsoft Azure SQL Database

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Executive SummaryUpdated on Aug 12, 2024

Microsoft Azure SQL Database and Google Cloud Spanner are two prominent cloud database services with distinct functionalities and benefits, each suited to different needs. Users find Spanner superior for its global distribution and consistency.

Features: Microsoft Azure SQL Database is praised for its integrated AI capabilities, disaster recovery options, and strong integration with Microsoft services. Google Cloud Spanner is noted for its strong global scaling, true ACID compliance, and global transactional consistency.

Room for Improvement: Users identify areas for improvement in Azure SQL Database's performance tuning, advanced data analytics features, and documentation. For Google Cloud Spanner, complex query execution, additional native support for various data types, and training resources need enhancements.

Ease of Deployment and Customer Service: Users generally find the deployment process of Microsoft Azure SQL Database straightforward, benefitting from integrated support. Google Cloud Spanner offers robust deployment options but could enhance initial setup ease. Azure receives mixed feedback on customer service responsiveness, while Spanner users value prompt and knowledgeable support.

Pricing and ROI: Microsoft Azure SQL Database offers competitive pricing with flexible options, appealing to those seeking cost-effective solutions. Google Cloud Spanner, meanwhile, is considered expensive but justified by its high performance and scalability. Users experience significant ROI with Azure due to cost savings, while Spanner users justify the higher upfront costs with long-term gains in performance and reliability.

To learn more, read our detailed Google Cloud Spanner vs. Microsoft Azure SQL Database Report (Updated: April 2025).

Buyer's Guide

Google Cloud Spanner vs. Microsoft Azure SQL Database

April 2025

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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

Google Cloud Spanner

Ranking in Database as a Service (DBaaS)

9th

Average Rating

9.0

Reviews Sentiment

7.8

Number of Reviews

Ranking in other categories

No ranking in other categories

Microsoft Azure SQL Database

Ranking in Database as a Service (DBaaS)

1st

Average Rating

8.6

Reviews Sentiment

7.2

Number of Reviews

117

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of April 2025, in the Database as a Service (DBaaS) category, the mindshare of Google Cloud Spanner is 4.4%, up from 3.7% compared to the previous year. The mindshare of Microsoft Azure SQL Database is 15.9%, down from 18.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Database as a Service (DBaaS)

Featured Reviews

Ethan Lo

Infrastructuer Security at Premise Data

A stable and scalable relational database that ensures a return on investment for its users

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. You can change Google Cloud Spanner's resource configuration, which is done through processing units. Suppose you set up Google Cloud Spanner initially with a hundred processing units, and then you run out of resources since your database used too much CPU. In the aforementioned scenario, you can scale up or down and face no downtime in the production phase. The solution's features are important when running a company twenty-four hours, seven days a week.

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Charley Hanania

Data Platform Specialist at QS2 AG - Quality Software Solutions

It is very easy to implement, manage, and offers great insights into what is happening inside the engine

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. Once you've set up a server, adding databases is easy. There's a minor challenge with having data in separate databases that you want to connect like we do on premises. I'm looking forward to using some of these new AI-driven functions that have come out around vectorization. Having the data closer to my transactional databases or data makes it easy to augment and enhance the Database and applications I currently use. It's great that Azure SQL now seamlessly integrates with Microsoft Fabric. It's a first-tier service in the cloud that connects to web applications and other databases. The data transformation orchestration capabilities within Database Factory and similar capabilities make it effortless to move that stuff forward.

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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 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."

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

"It is a very scalable solution."

"SQL Server's ability to automate data processing and validation through virtual agents and integration with other Microsoft applications like Power Virtual Agents and Azure SQL has dramatically improved efficiency."

"The SQL connector effectively syncs data to our database."

"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 most valuable feature is PolyBase."

"Azure SQL Database is very quick and easy to use."

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

"Microsoft Azure SQL Database supplies reliability and efficiency with its infrastructure, which is very beneficial to our organization."

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

More Microsoft Azure SQL Database pros

Cons

"The cost can be a bit high."

"The tool lacks to offer AI features."

"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."

"Lacking in technical documentation."

"It is a little bit expensive for us. They can improve the price. It would also be very helpful if they can offer some free trial."

"This solution would be improved with the inclusion of better self-service tools."

"There are compatibility issues that prevent Azure SQL Database from being a direct replacement for SQL Server running on a virtual machine."

"The solution has to scale up its expertise for hosting Oracle."

"From a security perspective, although their features are decent, they can always be improved upon, updated, and refined to help protect clients better."

"It can have more dashboards for monitoring, which would naturally help a lot. Other than that, everything is okay."

"A potential area for improvement could be integrating with third-party clouds."

More Microsoft Azure SQL Database cons

Pricing and Cost Advice

"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 expensive."

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

"I'm not sure what the exact price is, but it's a moderate amount. It's not too 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."

"The pricing is actually complicated, and that is probably one downside of it. In some respects, although we can plan for the costs on a month-by-month basis, we are finding it hard to project our costings for it. Fundamentally, Microsoft is offering two pricing models, and it is challenging to understand the differences between the two. We're basically on the DTU model at the moment. That may change in the future as the size grows, but it is one of those things that we'll end up monitoring as we progress. At the moment, to get a reasonable response, generally, the price is a little high for us, but it is one of those things for which we know that we can do improvements on our code. So, it is not just the service that's the problem; it is some of the things that we need to do as well."

"The price in general of Azure SQL could improve."

"There is a license required to use the solution and it cost $30 to do the installation."

"We pay less than $1000 monthly in licensing fees. There are no additional costs."

"There is no licensing cost for the solution."

More Microsoft Azure SQL Database pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

19%

Computer Software Company

14%

Retailer

Government

Educational Organization

73%

Computer Software Company

Financial Services Firm

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Questions from the Community

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 transactions, and provides excellent integration and monitoring tools as well as...

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What do you like most about Google Cloud Spanner?

Google Cloud Spanner is stable.

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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 news, but I believe that having BigQuery and GCP together could be a little cos...

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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 cloud.

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

The pricing of Microsoft Azure SQL Database is not cheap, affecting user uptake. A gradual reduction in price could improve accessibility and user numbers, making it easier for users to adopt the s...

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What needs improvement with SQL Azure?

Pricing could be improved to make Microsoft Azure SQL Database ( /products/microsoft-azure-sql-database-reviews ) more accessible. A reduction in price might encourage more users and bring more pro...

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Comparisons

Amazon RDS vs Google Cloud Spanner

Compared 31% of the time

MongoDB Atlas vs Google Cloud Spanner

Compared 17% of the time

SingleStore vs Google Cloud Spanner

Compared 14% of the time

Google Cloud SQL vs Google Cloud Spanner

Compared 13% of the time

Oracle Database as a Service vs Google Cloud Spanner

Compared 10% of the time

More Google Cloud Spanner Competitors

Google Cloud SQL vs Microsoft Azure SQL Database

Compared 42% of the time

Amazon RDS vs Microsoft Azure SQL Database

Compared 27% of the time

MongoDB Atlas vs Microsoft Azure SQL Database

Compared 16% of the time

Oracle Database as a Service vs Microsoft Azure SQL Database

Compared 7% of the time

vCloud Air vs Microsoft Azure SQL Database

Compared 2% of the time

More Microsoft Azure SQL Database Competitors

Product Reports

Buyer's Guide

Database as a Service (DBaaS)

March 2025

Download Google Cloud Spanner product report

Buyer's Guide

Microsoft Azure SQL Database

March 2025

Download Microsoft Azure SQL Database product report

Also Known As

Google Spanner

No data available

Overview

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

Streak, Optiva, Mixpanel

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

Buyer's Guide

Google Cloud Spanner vs. Microsoft Azure SQL Database

April 2025

Free Report: Google Cloud Spanner vs. Microsoft Azure SQL Database

Find out what your peers are saying about Google Cloud Spanner vs. Microsoft Azure SQL Database and other solutions. Updated: April 2025.

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