Living in the Netherlands, I spend a fair amount of time on trains, and that is usually where I catch up on what the builder community is writing. Until now, that meant opening a laptop or squinting at a browser tab on my phone. This week I found myself scrolling through trending articles and checking […]

Amazon Corretto 27, a Feature Release (FR) version, is now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. You can download Corretto 27 for Linux, Windows, and macOS from our downloads page. Corretto 27 will be supported through April 2027. Noticeable features:  G1 as the Default Garbage Collector in All Environments - Makes G1 the default garbage collector across all environments, delivering more consistent performance and predictable pause times regardless of where your application runs (JEP 523) Post-Quantum Hybrid Key Exchange for TLS 1.3 - Adds protection against future quantum computing threats by combining classical and post-quantum key exchange algorithms in TLS 1.3 connections (JEP 527) Compact Object Headers by Default - Reduces the memory footprint of Java objects by enabling smaller object headers by default, improving memory efficiency and cache utilization (JEP 534) JFR In-Process Data Redaction - Allows sensitive data to be redacted from Java Flight Recorder recordings before they leave the JVM, helping protect confidential information during profiling and diagnostics (JEP 536) Enhanced Pattern Matching (continued preview) - Extends support for primitive types in patterns, instanceof, and switch, letting developers write cleaner type and value checks including for types like int and boolean (JEP 532) Structured Concurrency (continued preview) - Refines the API for structured concurrency, treating groups of related tasks running in different threads as single units of work, streamlining error handling and cancellation, improving reliability, and enhancing observability (JEP 533) Lazy Constants (continued preview) - Provides an API to defer initialization of immutable data until it is actually needed, combining the performance benefits of final fields with the flexibility of lazy initialization (JEP 531) Vector API (continued incubator) - Improves support for high-performance mathematical operations that can take advantage of modern CPU vector capabilities (JEP 537) A detailed description of these features can be found on the OpenJDK 27 Project page. Amazon Corretto 27 is distributed by Amazon under an open source license.

Amazon Corretto 25, a Long Term Support (LTS) version, is now generally available. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. You can download Corretto 25 for Linux, Windows, and macOS from our downloads page. Amazon Corretto 25 new features include: Two features that were initially released as experimental in JDK 24 are now LTS production-ready in JDK 25: Compact Object Headers: designed to lower heap memory usage by shrinking object headers from 96-128 bits down to 64 bits. Generational Shenandoah GC: engineered to provide sustainable throughput and lower p99 pause times or similar pause times with a smaller heap and reduced CPU usage. Ahead-of-Time (AOT) Caching: designed to improve cold-start and warm-up time by reusing pre-parsed pre-linked classes and compilation profiles between training and production runs. Language improvements: primitive types in patterns, flexible constructors, module‑wide imports, compact source files, scoped values for thread-local variables, stable values for immutable data, all designed to cut boilerplate, keep everyday code shorter and safer. Observability: JDK Flight Recorder gains CPU‑time sampling, cooperative sampling and method‑trace events for low‑overhead production profiling. Structured Concurrency: designed to provide coordinated task management, allowing related tasks fail or finish together. Vector API: developed to provide computations that compile to optimal vector instructions on supported CPUs. Virtual Thread pinning improvements: reduces thread pinning in synchronized blocks for better scalability. A detailed description of these features can be found on the OpenJDK 25 Project page. Amazon Corretto 25 is distributed by Amazon under an open source license and will be supported through October 2032.

Amazon Corretto 25, a Long Term Support (LTS) version, is now generally available. https://aws.amazon.com/corretto/ is a no-cost, multi-platform, production-ready distribution of https://aws.amazon.com/blogs/opensource/amazon-corretto-no-cost-distribution-openjdk-long-term-support/. You can download Corretto 25 for Linux, Windows, and macOS from our https://docs.aws.amazon.com/corretto/latest/corretto-25-ug/downloads-list.html. Amazon Corretto 25 new features include: Two features that were initially released as experimental in JDK 24 are now LTS production-ready in JDK 25: Compact Object Headers: designed to lower heap memory usage by shrinking object headers from 96-128 bits down to 64 bits. Generational Shenandoah GC: engineered to provide sustainable throughput and lower p99 pause times or similar pause times with a smaller heap and reduced CPU usage. Ahead-of-Time (AOT) Caching: designed to improve cold-start and warm-up time by reusing pre-parsed pre-linked classes and compilation profiles between training and production runs. Language improvements: primitive types in patterns, flexible constructors, module‑wide imports, compact source files, scoped values for thread-local variables, stable values for immutable data, all designed to cut boilerplate, keep everyday code shorter and safer. Observability: JDK Flight Recorder gains CPU‑time sampling, cooperative sampling and method‑trace events for low‑overhead production profiling. Structured Concurrency: designed to provide coordinated task management, allowing related tasks fail or finish together. Vector API: developed to provide computations that compile to optimal vector instructions on supported CPUs. Virtual Thread pinning improvements: reduces thread pinning in synchronized blocks for better scalability. A detailed description of these features can be found on the https://openjdk.org/projects/jdk/25/. Amazon Corretto 25 is distributed by Amazon under an https://openjdk.org/legal/gplv2+ce.html and will be supported through October 2032.

On October 21, 2025 Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Supported (LTS) versions of OpenJDK. Corretto 25.0.1, 21.0.9, 17.0.17, 11.0.29, 8u472 are now available for https://aws.amazon.com/corretto/. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. This release of Corretto JDK binaries for Generic Linux, Alpine and macOS will include https://github.com/async-profiler/async-profiler, a low overhead sampling profiler for Java supported by the Amazon Corretto team. Async-Profiler is designed to provide profiling data for CPU time, allocations in Java Heap, native memory allocations and leaks, contended locks, hardware and software performance counters like cache misses, page faults, context switches, Java method profiling, and much more. Click on the Corretto https://aws.amazon.com/corretto to download Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-21-ug/generic-linux-install.html. Feedback is https://github.com/corretto!

On October 21, 2025 Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Supported (LTS) versions of OpenJDK. Corretto 25.0.1, 21.0.9, 17.0.17, 11.0.29, 8u472 are now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. This release of Corretto JDK binaries for Generic Linux, Alpine and macOS will include Async-Profiler, a low overhead sampling profiler for Java supported by the Amazon Corretto team. Async-Profiler is designed to provide profiling data for CPU time, allocations in Java Heap, native memory allocations and leaks, contended locks, hardware and software performance counters like cache misses, page faults, context switches, Java method profiling, and much more. Click on the Corretto home page to download Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a Corretto Apt, Yum, or Apk repo. Feedback is welcomed!

Corretto 24 is now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Corretto 24 is an OpenJDK 24 Feature Release, which will be supported through October, 2025. OpenJDK 24 introduces enhanced performance with two new experimental features: the Generational Shenandoah garbage collector, designed to improve sustainable throughput, load-spike resilience, and memory utilization, and Compact Object Headers, designed to improve heap usage by shrinking object headers from between 96 and 128 bits down to 64 bits on 64-bit architectures. Additionally, this release includes Ahead-of-Time Class Loading & Linking, designed to improve startup time by making the classes of an application instantly available, Synchronize Virtual Threads without Pinning, designed to eliminate nearly all cases of virtual threads being pinned to platform threads, Quantum-Resistant Module-Lattice-Based Key Encapsulation Mechanism, designed to be secure against future quantum computing attacks. For more information about the features in OpenJDK 24, a detailed description can be found on its Project page. Amazon Corretto is distributed by Amazon under an open source license. Click on the Corretto home page to download Corretto 24. You can also get the updates on your Linux system by configuring a Corretto Apt or Yum repo.

Amazon Corretto 27, a Feature Release (FR) version, is now available for download. https://aws.amazon.com/corretto/ is a no-cost, multi-platform, production-ready distribution of https://aws.amazon.com/blogs/opensource/amazon-corretto-no-cost-distribution-openjdk-long-term-support/. You can download Corretto 27 for Linux, Windows, and macOS from our https://docs.aws.amazon.com/corretto/latest/corretto-27-ug/downloads-list.html. Corretto 27 will be supported through April 2027. Noticeable features:  G1 as the Default Garbage Collector in All Environments - Makes G1 the default garbage collector across all environments, delivering more consistent performance and predictable pause times regardless of where your application runs (JEP 523) Post-Quantum Hybrid Key Exchange for TLS 1.3 - Adds protection against future quantum computing threats by combining classical and post-quantum key exchange algorithms in TLS 1.3 connections (JEP 527) Compact Object Headers by Default - Reduces the memory footprint of Java objects by enabling smaller object headers by default, improving memory efficiency and cache utilization (JEP 534) JFR In-Process Data Redaction - Allows sensitive data to be redacted from Java Flight Recorder recordings before they leave the JVM, helping protect confidential information during profiling and diagnostics (JEP 536) Enhanced Pattern Matching (continued preview) - Extends support for primitive types in patterns, instanceof, and switch, letting developers write cleaner type and value checks including for types like int and boolean (JEP 532) Structured Concurrency (continued preview) - Refines the API for structured concurrency, treating groups of related tasks running in different threads as single units of work, streamlining error handling and cancellation, improving reliability, and enhancing observability (JEP 533) Lazy Constants (continued preview) - Provides an API to defer initialization of immutable data until it is actually needed, combining the performance benefits of final fields with the flexibility of lazy initialization (JEP 531) Vector API (continued incubator) - Improves support for high-performance mathematical operations that can take advantage of modern CPU vector capabilities (JEP 537) A detailed description of these features can be found on the https://openjdk.org/projects/jdk/27/. Amazon Corretto 27 is distributed by Amazon under an https://openjdk.org/legal/gplv2+ce.html.

On Aug 18, 2026, Amazon announced critical security patch update (CSPU) for Amazon Corretto Long-Term Support (LTS) and Feature Release (FR) versions of OpenJDK. Corretto 26.0.2.11.1, 25.0.4.8.1, 21.0.12.9.1, 17.0.20.10.1, 11.0.32.10.1, and 8u504 are now available for https://aws.amazon.com/corretto/. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Visit Corretto https://aws.amazon.com/corretto to download Corretto 26, Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-26-ug/generic-linux-install.html. Feedback is https://github.com/corretto!

On Aug 18, 2026, Amazon announced critical security patch update (CSPU) for Amazon Corretto Long-Term Support (LTS) and Feature Release (FR) versions of OpenJDK. Corretto 26.0.2.11.1, 25.0.4.8.1, 21.0.12.9.1, 17.0.20.10.1, 11.0.32.10.1, and 8u504 are now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Visit Corretto home page to download Corretto 26, Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a Corretto Apt, Yum, or Apk repo. Feedback is welcomed!

On July 22, 2026, Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Support (LTS) and Feature Release (FR) versions of OpenJDK. Corretto 26.0.2, 25.0.4, 21.0.12, 17.0.20, 11.0.32, and 8u502 are now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Starting with this release, the default Amazon Corretto Docker images are based on Amazon Linux 2023. Amazon Linux 2 images will continue to be provided as non-default options for customers who cannot yet migrate. JavaFX binaries are no longer included with Corretto 8 starting from this release. You can learn more about the migration recommendations at Corretto 8 GitHub. Visit Corretto home page to download Corretto 26, Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a Corretto Apt, Yum, or Apk repo. Feedback is welcomed!

On July 22, 2026, Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Support (LTS) and Feature Release (FR) versions of OpenJDK. Corretto 26.0.2, 25.0.4, 21.0.12, 17.0.20, 11.0.32, and 8u502 are now available for https://aws.amazon.com/corretto/. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Starting with this release, the default Amazon Corretto Docker images are based on Amazon Linux 2023. Amazon Linux 2 images will continue to be provided as non-default options for customers who cannot yet migrate. JavaFX binaries are no longer included with Corretto 8 starting from this release. You can learn more about the migration recommendations at https://github.com/corretto/corretto-8/issues/569. Visit Corretto https://aws.amazon.com/corretto to download Corretto 26, Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-25-ug/generic-linux-install.html. Feedback is https://github.com/corretto!

Hello! I’m Daniel Abib, and this is my first AWS Weekly Roundup. I’m a Senior Specialist Solutions Architect at AWS, focused on the generative AI and Amazon Bedrock. With over 28 years of experience in solution architecture, software development, and cloud architecture, I help Startups & Enterprises harness the power of generative AI with Amazon […]

On April 22, 2026 Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Supported (LTS) and Feature Release (FR) versions of OpenJDK. Corretto 26.0.1, 25.0.3, 21.0.11, 17.0.19, 11.0.31, and 8u492 are now available for https://aws.amazon.com/corretto/. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. This is the last Corretto 8 release to include JavaFX binaries. JavaFX binaries will no longer be included starting from the next quarterly update in July 2026. You can learn more about the migration recommendations at https://github.com/corretto/corretto-8/issues/569. Visit Corretto https://aws.amazon.com/corretto to download Corretto 26, Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-25-ug/generic-linux-install.html. Feedback is https://github.com/corretto!

Hello! I’m Daniel Abib, and this is my first AWS Weekly Roundup. I’m a Senior Specialist Solutions Architect at AWS, focused on the generative AI and Amazon Bedrock. With over 28 years of experience in solution architecture, software development, and cloud architecture, I help Startups & Enterprises harness the power of generative AI with Amazon […]

Hello! I’m Daniel Abib, and this is my first AWS Weekly Roundup. I’m a Senior Specialist Solutions Architect at AWS, focused on the generative AI and Amazon Bedrock. With over 28 years of experience in solution architecture, software development, and cloud architecture, I help Startups & Enterprises harness the power of generative AI with Amazon […]

Amazon Corretto 26, a Feature Release (FR) version, is now available for download. https://aws.amazon.com/corretto/ is a no-cost, multi-platform, production-ready distribution of https://aws.amazon.com/blogs/opensource/amazon-corretto-no-cost-distribution-openjdk-long-term-support/. You can download Corretto 26 for Linux, Windows, and macOS from our https://docs.aws.amazon.com/corretto/latest/corretto-26-ug/downloads-list.html. Corretto 26 will be supported through October 2026. HTTP/3 Support - Java applications can now use the latest HTTP/3 protocol, which is faster and more efficient than older HTTP versions (JEP 517) Ahead-of-Time Object Caching - Applications can start up faster by pre-caching commonly used objects, working with any garbage collector (JEP 516) Enhanced Pattern Matching - Developers can write cleaner code when checking types and values, now including support for primitive types like int and boolean (JEP 530) Making Final Mean Final - Starts warning when code uses reflection to modify final fields, preparing for a future release where final fields will truly be immutable. This change improves both program safety and enables better optimizations like constant folding (JEP 500) Structured Concurrency (continued preview) - Introduces API for structured concurrency, treating groups of related tasks running in different threads as single units of work, streamlining error handling and cancellation, improving reliability, and enhancing observability (JEP 525) Vector API (continued incubator) - Improved support for high-performance mathematical operations that can take advantage of modern CPU capabilities (JEP 529) Lazy Constants (continued preview) - Provides API to defer initialization of immutable data until it is actually needed, combining the performance benefits of final fields with the flexibility of lazy initialization (JEP 526) A detailed description of these features can be found on the https://openjdk.org/projects/jdk/26/. Amazon Corretto 26 is distributed by Amazon under an https://openjdk.org/legal/gplv2+ce.html.

Hey! It’s my first post for 2026, and I’m writing to you while watching our driveway getting dug out. I hope wherever you are you are safe and warm and your data is still flowing! This week brings exciting news for customers running GPU-intensive workloads, with the launch of our newest graphics and AI inference […]

Hey! It’s my first post for 2026, and I’m writing to you while watching our driveway getting dug out. I hope wherever you are you are safe and warm and your data is still flowing! This week brings exciting news for customers running GPU-intensive workloads, with the launch of our newest graphics and AI inference […]

On January 20, 2026 Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Supported (LTS) versions of OpenJDK. Corretto 25.0.2, 21.0.10, 17.0.18, 11.0.30, and 8u482 are now available for https://aws.amazon.com/corretto/. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Click on the Corretto https://aws.amazon.com/corretto to download Corretto 25, Corretto 21, Corretto 17, Corretto 11, or Corretto 8. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-25-ug/generic-linux-install.html. Feedback is https://github.com/corretto!

On Apr 15, 2025 Amazon announced quarterly security and critical updates for Amazon Corretto Long-Term Supported (LTS) and Feature Release (FR) versions of OpenJDK. Corretto 24.0.1, 21.0.7, 17.0.15, 11.0.27, 8u452 are now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. Click on the Corretto https://aws.amazon.com/corretto to download Corretto 8, Corretto 11, Corretto 17, Corretto 21, or Corretto 24. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-21-ug/generic-linux-install.html. Feedback is https://github.com/corretto!

Corretto 24 is now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of https://openjdk.org/. Corretto 24 is an OpenJDK 24 Feature Release, which will be supported through October, 2025. OpenJDK 24 introduces enhanced performance with two new experimental features: the Generational Shenandoah garbage collector, designed to improve sustainable throughput, load-spike resilience, and memory utilization, and Compact Object Headers, designed to improve heap usage by shrinking object headers from between 96 and 128 bits down to 64 bits on 64-bit architectures. Additionally, this release includes Ahead-of-Time Class Loading & Linking, designed to improve startup time by making the classes of an application instantly available, Synchronize Virtual Threads without Pinning, designed to eliminate nearly all cases of virtual threads being pinned to platform threads, Quantum-Resistant Module-Lattice-Based Key Encapsulation Mechanism, designed to be secure against future quantum computing attacks. For more information about the features in OpenJDK 24, a detailed description can be found on its https://openjdk.org/projects/jdk/24/. Amazon Corretto is distributed by Amazon under https://openjdk.java.net/legal/gplv2+ce.html. Click on the Corretto https://docs.aws.amazon.com/corretto/latest/corretto-24-ug/downloads-list.html to download Corretto 24. You can also get the updates on your Linux system by configuring a https://docs.aws.amazon.com/corretto/latest/corretto-24-ug/generic-linux-install.html.