Software Alternatives, Accelerators & Startups

Azure Functions VS OpenNebula

Compare Azure Functions VS OpenNebula and see what are their differences

Azure Functions logo Azure Functions

Azure Functions is a serverless event driven experience that extends the existing Azure App Service platform.

OpenNebula logo OpenNebula

OpenNebula is an Open Source Cloud & Edge Computing Platform to build & manage Enterprise Clouds. OpenNebula provides unified management of IT infrastructure, avoiding vendor lock-in & reducing complexity, resource consumption, & operational costs 🚀
  • Azure Functions Landing page
    Landing page //
    2022-09-26
  • OpenNebula Landing page
    Landing page //
    2023-09-30

Azure Functions

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

OpenNebula

$ Details
freemium $3000.0 / Annually ( Unlimited CPUs, Cores, VMs. Plus €200 ($250) per managed node )
Platforms
Hypervisors VMWare KVM LXD Cloud Edge Docker Azure Linux
Release Date
2008 July
Startup details
Country
Spain
State
Madrid
City
Madrid
Founder(s)
Ignacio M. Llorente
Employees
50 - 99

Azure Functions features and specs

  • Scalability
    Azure Functions offers automatic scaling based on demand, which means it can handle varying workloads without manual adjustments.
  • Cost-effective
    With its consumption-based pricing model, you only pay for the compute resources used during function execution, making it cost-effective for many scenarios.
  • Simplified Development
    Developers can focus on writing code without worrying about infrastructure management, including server provisioning and maintenance.
  • Multiple Language Support
    Azure Functions supports a wide range of programming languages, including C#, JavaScript, Python, and more, offering flexibility for developers.
  • Integration with Azure Services
    Azure Functions seamlessly integrates with other Azure services like Cosmos DB, Blob Storage, and Event Hubs, enabling the creation of complex workflows.

Possible disadvantages of Azure Functions

  • Cold Start Latency
    Functions in a serverless environment can experience latency during initial invocation after being dormant, which might impact performance for time-sensitive applications.
  • Execution Timeout
    Azure Functions have a maximum execution timeout, which can be limiting for long-running processes and might require architectural adjustments.
  • Vendor Lock-In
    Leveraging Azure-specific features can lead to vendor lock-in, making it difficult to migrate to other cloud platforms without significant refactoring.
  • Limited Debugging and Monitoring
    Debugging Azure Functions can be less straightforward compared to traditional applications, with constraints in local debugging and monitoring capabilities.
  • Complex Pricing Model
    The pricing model can become complex, especially for applications with unpredictable workloads, making it challenging to estimate costs accurately.

OpenNebula features and specs

  • Cloud Automation
  • Cloud-based Infrastructure
  • Open-source
  • Kubernetes Integration
  • Edge

Azure Functions videos

How to build a movie review app with Azure Cosmos DB and Azure Functions | Azure Makers Series

More videos:

  • Review - Go serverless: Event-driven applications with Azure Functions | Azure Friday
  • Review - Azure Friday | Serverless Apps with Azure Cosmos DB and Azure Functions

OpenNebula videos

Introduction to OpenNebula

More videos:

  • Tutorial - OpenNebula - Preventing Vendor Lock-in with an OpenNebula Multi-Cloud
  • Tutorial - vOneCloud - Deploy your OpenNebula Cloud in vSphere in 5 minutes

Category Popularity

0-100% (relative to Azure Functions and OpenNebula)
Cloud Hosting
100 100%
0% 0
Cloud Computing
26 26%
74% 74
Virtualization Platform
0 0%
100% 100
App Deployment
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Azure Functions and OpenNebula

Azure Functions Reviews

Top 7 Firebase Alternatives for App Development in 2024
Azure Functions is particularly useful for developers working with .NET technologies or those already using Azure services.
Source: signoz.io

OpenNebula Reviews

We have no reviews of OpenNebula yet.
Be the first one to post

Social recommendations and mentions

Based on our record, OpenNebula should be more popular than Azure Functions. It has been mentiond 10 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Azure Functions mentions (3)

  • Manage serverless APIs with Apache APISIX
    This article shows with the simple example how to manage Java-based serverless APIs build with Azure functions. It uses azure-functions plugin to integrate Apache APISIX API Gateway with Azure Serverless Function that invokes the HTTP trigger functions and return the response from Azure Cloud. - Source: dev.to / over 2 years ago
  • The Power of GitHub Actions for Streamlining DevOps Workflows
    GitHub Actions for Azure: This GitHub Action allows developers to automate tasks on the Microsoft Azure platform. With this action, developers can easily integrate Azure services into their workflows, such as Azure Functions, App Services, and Kubernetes. This can help streamline DevOps workflows by automating tasks such as deployment, testing, and scaling on the Azure platform. - Source: dev.to / over 2 years ago
  • NoOps: What Does the Future Hold for DevOps Engineers?
    NoOps is best suited for born-in-the-cloud environments that leverage PaaS and serverless solutions. Microservices and API-based application architectures fit the bill perfectly, as they offer fine-grained modularity along with automation. Leading cloud service providers like AWS, Azure, and GCP have a laser focus on providing more services and capabilities in PaaS and serverless, which would help accelerate the... - Source: dev.to / almost 4 years ago

OpenNebula mentions (10)

  • Top 10 European Open-Source Projects to Watch in 2025
    Supports Kubernetes for cloud-native uses. Discover more by visiting the OpenNebula official website. - Source: dev.to / about 2 months ago
  • Euro-cloud provider Anexia moves 12,000 VMs off VMware to homebrew KVM platform
    Or just use https://opennebula.io/ based on KVM, still works with vmware if needed. ~20 year old project. It has legs. - Source: Hacker News / 4 months ago
  • Seamless and Fully Automated VMware Migration with OneSwap
    Many organizations have already successfully migrated to OpenNebula, an open source cloud and edge computing platform. The solution offers greater flexibility, substantial cost savings, and vendor neutrality, allowing companies to retain full control over their cloud infrastructure. - Source: dev.to / 7 months ago
  • Common OpenSource Cloud OS
    OpenNebula is a cloud computing toolkit which is used to manage heterogeneous distributed datacenter infrastructures. And it controls a data center’s virtual infrastructure to build private, public as well as hybrid implementations of IaaS. Source: about 2 years ago
  • VMware Alternatives?
    Since it hasn't been mentioned I'll throw https://opennebula.io/ out there for this. Source: over 2 years ago
View more

What are some alternatives?

When comparing Azure Functions and OpenNebula, you can also consider the following products

AWS Lambda - Automatic, event-driven compute service

Proxmox VE - Proxmox is an open-source server virtualization management solution that offers the ability to manage virtual server technology with the Linux OpenVZ and KVM technology.

Google App Engine - A powerful platform to build web and mobile apps that scale automatically.

oVirt - oVirt is a virtualization management application.

Now Platform - Get native platform intelligence, so you can predict, prioritize, and proactively manage the work that matters most with the NOW Platform from ServiceNow.

c12n.cloud - 100% Open Source based cloud solution for your own private IaaS based on OpenStack, Kubernetes and Ceph