Azul OpenJDK

Choosing the Right Java Solution: Azul vs OpenJDK Compared

Azul vs OpenJDK:

  • Performance: Azul is known for performance optimizations, often outperforming OpenJDK in specific scenarios.
  • Support Services: Azul offers dedicated commercial support, whereas OpenJDK relies on community-based support.
  • Cost: Azul can be more cost-effective for enterprises, especially when considering Oracle JDK licensing and support.
  • Community and Ecosystem: OpenJDK has a more extensive ecosystem due to its open-source nature.
  • Compatibility: Both JDKs provide good cross-platform support and are compatible with various development environments.
  • Security and Updates: Azul and OpenJDK regularly update for security and performance, with Azul offering more frequent stabilized builds.
  • Use Cases: Choice depends on specific needs; Azul is favored in enterprise settings, while OpenJDK is popular for general use.

Azul vs OpenJDK in the Java ecosystem

  • Azul: Known for its Azul Platform Prime, Azul is a significant player in the Java ecosystem. It offers Java Development Kit (JDK) solutions that focus on performance optimization and support for enterprise systems.
  • OpenJDK: An open-source implementation of the Java Platform, Standard Edition, OpenJDK serves as the basis for many JDK distributions, including those provided by Azul. It is widely used in the Java community and forms the reference implementation for Java SE.

The Relevance of Choosing the Right JDK for Java Applications

  • Performance and Scalability: The choice of JDK can significantly impact Java applications’ performance, scalability, and efficiency.
  • Cost and Licensing: With varying licensing models and prices, selecting the right JDK can affect both software development’s legal compliance and financial aspects.
  • Support and Community: A JDK’s community support and the professional support offered by its provider are crucial for application maintenance and troubleshooting.

Comparative Analysis of Azul and OpenJDK

openjdk vs azul

Breakdown of Key Differences and Similarities

  • Licensing and Cost: While Azul and OpenJDK offer open-source solutions, their licensing models and associated costs differ, impacting the choice for enterprise users.
  • Support Services: Azul provides dedicated support for its JDK solutions, a significant consideration for enterprises requiring reliable and timely assistance.
  • Community and Ecosystem: OpenJDK has a vast community and serves as a base for many other JDKs, whereas Azul’s solutions are tailored to specific enterprise needs.

Features and Capabilities of Each JDK Version

  • Performance: Azul’s JDKs, especially Azul Platform Prime, are known for their performance enhancements and optimizations. OpenJDK provides a solid base performance suitable for a wide range of applications.
  • Compatibility and Updates: Azul and OpenJDK are regularly updated to comply with the latest Java standards, but their approaches to updates and compatibility may vary.
  • Extended Support: Azul offers extended support for older Java versions, which is crucial for enterprises running legacy systems, whereas OpenJDK focuses more on the latest Java versions.

This comparative analysis aims to clearly understand the differences and similarities between Azul and OpenJDK, guiding Java developers and decision-makers in selecting the most suitable JDK for their specific requirements and constraints.

Performance Benchmarks

Analysis of Performance Metrics

  • CPU Usage: A critical factor in evaluating JDK performance, CPU usage often indicates the efficiency of a JDK in processing tasks. Comparisons typically involve monitoring how each JDK version handles the same workload under similar conditions.
  • Response Times: The response time metric is crucial for applications where speed is a priority. This involves measuring the time a system takes to respond to requests under both JDKs.
  • Garbage Collection: The efficiency of garbage collection (GC) impacts application performance and responsiveness. Analyzing GC behavior, such as frequency and pause times, offers insights into the overall performance characteristics of each JDK.

Comparative Performance Results

  • Specific Scenarios: Performance can vary significantly based on the application type and usage scenario. For instance, enterprise-level applications might exhibit different performance characteristics than smaller, less complex ones.
  • Application Types: Different applications, such as web services, data processing applications, and desktop applications, may respond differently to each JDK, affecting the choice of JDK based on the specific use case.

Support and Community

Overview of Support Services Offered by Azul and OpenJDK Community

  • Azul Support Services: Azul is known for providing comprehensive support services, including 24/7 assistance and dedicated Java-focused engineering support. This support is crucial for enterprises requiring reliable and immediate Java application assistance.
  • OpenJDK Community Support: While OpenJDK doesn’t offer official commercial support, it boasts a large and active community. This community provides informal support through forums, Q&A websites, and community-led documentation.

Customer Satisfaction and Developer Community Engagement Aspects

  • Customer Satisfaction: User satisfaction can be a key indicator of the effectiveness and reliability of a JDK. Azul’s emphasis on support has translated into high customer satisfaction, particularly among enterprise users.
  • Developer Community Engagement: OpenJDK’s extensive developer community contributes to a rich ecosystem of resources, shared knowledge, and collaborative problem-solving, which can be highly beneficial for general Java development challenges.

Azul and OpenJDK’s performance benchmarks and support services play pivotal roles in determining their suitability for specific Java application needs.

While Azul offers dedicated support and performance optimizations, OpenJDK’s broad community support and general performance capabilities make it a versatile choice​.

Top 5 Considerations When Choosing a JDK

Factors to Consider

  1. Cost: Assess the licensing fees and overall cost implications of each JDK. Azul might offer cost benefits, especially for enterprises.
  2. Application Requirements: Evaluate the JDK based on the specific needs of your application, such as performance requirements, Java version compatibility, and feature set.
  3. Future Scalability: Consider the scalability of the JDK in terms of handling increasing workloads and future expansion plans of your application.
  4. Support and Maintenance: Analyze the level of support offered, including community support for OpenJDK and dedicated support from Azul.
  5. Security and Compliance: Ensure the JDK adheres to necessary security standards and compliance requirements.

Best Practices for Evaluation and Selection

  • Conduct Performance Testing: Test both JDKs in a controlled environment to assess performance impacts.
  • Review Community Feedback: Leverage insights from the developer community and existing user reviews.
  • Align with Business Strategy: The choice should align with your overall business and technology strategy.

Integration and Compatibility

Compatibility with Development Environments and Platforms

  • Cross-Platform Support: Azul and OpenJDK generally offer solid cross-platform support but verify compatibility with specific operating systems and architectures.
  • Development Tools Compatibility: Ensure the JDK is compatible with your existing development tools and IDEs.

Ease of Integration with Existing Systems

  • Seamless Integration: Look for JDKs that integrate smoothly with your existing software stack, including databases, web servers, and application frameworks.
  • Migration Support: Consider the ease of migrating from your current JDK to the new one, mainly regarding code changes and configuration adjustments.

FAQ Section

  • Q: Are there performance differences between Azul and OpenJDK?
    • A: Performance can vary based on specific use cases. Conducting benchmark tests is recommended.
  • Q: How does the cost of Azul compare to OpenJDK?
    • A: Azul might offer a more cost-effective solution for enterprises, but evaluating based on your specific usage and licensing needs is essential.
  • Q: Can I easily switch from OpenJDK to Azul?
    • A: The switch usually involves minimal disruption, but thorough testing is advisable to ensure compatibility.


The comparison between Azul and OpenJDK reveals critical differences in performance, support, cost, and community engagement.

Both JDKs have their strengths, with Azul offering dedicated support and potentially better performance in specific scenarios, while OpenJDK benefits from a vast, open-source community.

Selecting the right JDK hinges on your application’s specific requirements, budget constraints, and future scalability needs.


  • Fredrik Filipsson

    Fredrik Filipsson brings two decades of Oracle license management experience, including a nine-year tenure at Oracle and 11 years in Oracle license consulting. His expertise extends across leading IT corporations like IBM, enriching his profile with a broad spectrum of software and cloud projects. Filipsson's proficiency encompasses IBM, SAP, Microsoft, and Salesforce platforms, alongside significant involvement in Microsoft Copilot and AI initiatives, enhancing organizational efficiency.