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Azure Functions vs Heroku 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:
 

Categories and Ranking

Azure Functions
Ranking in PaaS Clouds
25th
Average Rating
4.0
Reviews Sentiment
4.7
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Heroku
Ranking in PaaS Clouds
13th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
29
Ranking in other categories
No ranking in other categories
 

Featured Reviews

GM
Product Manager at a tech vendor with 10,001+ employees
Faced timeouts and complexity but have automated Python data processing in the cloud
Elastic Pool is basically a SQL server that can host multiple SQL databases, not Azure Elastic SAN or just Elastic. Elastic Pool has nothing to do with the ELK stack. A Storage Account is called the file storage, and it is like an S3 from Azure. The file storage is indeed called a Storage Account. I am not actively working on Active Directory or any solutions like App Logic from Azure. I am not using ML Studio or Data Box. For pricing, I would say it is also a bit more expensive than normal, and I would rate it four as well. I would give this review an overall rating of four out of ten.
Faizan Haider - PeerSpot reviewer
Senior Software Engineer at Aldaim Solutions
Used for server deployment and provides auto maintenance of databases
Heroku is deployed on the cloud. We can deploy our private and public projects over at Heroku. Most of the time, when we are starting any new project from scratch, we have to implement our MVP for that project or the core idea. We are unsure how our traffic flow will go or the actual production environment requirements. We don't want to spend the most on the server sites, so then we can use it with our go-to plan for Heroku, and all the resources are available in the basic plan with the minimum expenses. So, it helps us to deploy and make our features available online at the minimum cost. Once we know our needs, we can add the professional add-ons and shift it to another platform. Heroku supports any resource listed in the marketplace. We just have to deploy our AI solutions, and Heroku can also support AI projects. I would recommend the solution to other users. I advise users not to purchase extra add-ons but to make scalable resources so that they can use all the resources efficiently. Overall, I rate the solution a nine out of ten.

Quotes from Members

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

Pros

"Azure Functions has a quite easy and straightforward initial setup."
"Valuable for us was the fast deployment. This means the time to market is improved without pain for developers."
"One of the best things about Heroku is that it is very easy and straightforward to deploy an application."
"The product is stable."
"Thanks to Heroku, we don't need to do as much direct management in AWS."
"They solve most of our problems and we don't experience many issues with them."
"The solution's most valuable feature is the auto maintenance of databases."
"Deploying with git, npm install git hook ... basically, they got it right for nodejs servers hosting."
"We, as a startup, can use Heroku and the plenty of possible configurations to scale from the very beginning to a medium-sized company."
 

Cons

"Microsoft can improve Azure Functions by adding durable functions, as the current setup times out after thirty minutes, which is quite irritating."
"We have to do daily restarts of some processes, which is annoying, and the support for custom CI could be better."
"Heroku should increase its slug size limits."
"I improved the application performance by monitoring and adjusting the cleaner configuration to help set better lightweight limits on containers that run the app instances."
"There is an issue because Heroku supports Docker container images, but not if you're using the continuous integration infrastructure."
"Heroku doesn't support Docker images on the CI infrastructure."
"We don't find the pipelines intuitive. The user experience could be better. Having to set up multiple apps, then a pipeline, seems like an overkill on the amount of work to do."
"The tool's configuration is complex."
"Slow restart on servers"
 

Pricing and Cost Advice

Information not available
"The price of Heroku could be less expensive."
"The tool is free."
"There is a standard fee for a processing unit, they call them "dynos," and then you pay for add-ons."
"Its price is very good."
"I rate the tool's pricing a three out of ten."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
11%
University
8%
Computer Software Company
8%
Educational Organization
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise2
Large Enterprise3
 

Questions from the Community

What needs improvement with Azure Functions?
I have not integrated Azure Functions with any third-party solutions outside of the Azure environment. I have not integrated CI/CD with Azure Functions. Microsoft can improve Azure Functions by add...
What is your primary use case for Azure Functions?
Azure Functions is used to host a Python script that requires about five minutes of processing. I am only using Azure Functions for Python scripts and am not hosting multiple languages, so I do not...
What advice do you have for others considering Azure Functions?
Elastic Pool is basically a SQL server that can host multiple SQL databases, not Azure Elastic SAN or just Elastic. Elastic Pool has nothing to do with the ELK stack. A Storage Account is called th...
What needs improvement with Heroku?
I don't like that the web server crashes every day, every 24 hours. The pricing could be improved because scaling the database becomes costly. The Docker features are not great. You cannot use any ...
What is your primary use case for Heroku?
We use the solution for web applications and web APIs.
What advice do you have for others considering Heroku?
The integration capabilities are great because of the quick integration and the management features. We don't need a lot of expertise and all external DevOps people. Heroku is the easiest platform ...
 

Comparisons

No data available
 

Overview

 

Sample Customers

Information Not Available
Facebook, UrbanDictionary, Code for America, Mailchimp, Rapportive, GitHub, TED, and Lyft.
Find out what your peers are saying about Microsoft, Amazon Web Services (AWS), Red Hat and others in PaaS Clouds. Updated: March 2026.
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