Amazon Linux is the official Linux distribution maintained by Amazon Web Services, engineered from the ground up with cloud workloads in mind. Originally launched as "Amazon Linux AMI" in 2010, the distribution has evolved significantly. Amazon Linux 2 provided a long-term support release with on-premises support, and Amazon Linux 2023 (AL2023) is the current generation — built on Fedora upstream sources and aligned more closely with the RHEL/Fedora ecosystem than previous versions.
Cloud-Native Architecture
The defining characteristic of Amazon Linux is its first-class integration with AWS services. The distribution ships with the AWS CLI pre-installed, includes pre-configured cloud-init for seamless EC2 bootstrapping, and features a kernel that has been tuned specifically for AWS's Nitro hypervisor platform. Networking, storage I/O, and CPU scheduling are all optimized for cloud environments, giving users a performance advantage over generic Linux distributions running on the same hardware.
Security-First Approach
Amazon Linux 2023 introduced a more opinionated security posture with SELinux enabled by default in enforcing mode, OpenSSL 3.x as the baseline, and a deterministic package repository that locks to a specific point-in-time snapshot. This makes AL2023 highly reproducible — a significant advantage for teams running infrastructure-as-code. AWS provides regular security patches through its own update infrastructure, and the distribution benefits from Amazon's internal security research and threat monitoring teams.
Package Management with DNF
AL2023 switched from yum to DNF as its primary package manager, aligning with modern Fedora/RHEL conventions. The package set is curated specifically for server workloads; desktop environments and multimedia tools are absent by default. Developers can use Amazon Extras (on AL2 ) or the standard AL2023 repositories to install popular runtimes like Python, Node.js, Go, Java, and PHP. The repository is versioned, allowing users to pin to exact package versions for reproducibility.
Performance and Kernel Tuning
Amazon Linux ships with a custom kernel that includes AWS-specific patches, including enhanced Nitro driver support, ENA (Elastic Network Adapter) drivers baked in, and NVMe optimizations for EC2 instance store volumes. Benchmark tests consistently show lower latency and higher throughput on Amazon Linux compared to generic CentOS or Ubuntu images on EC2, particularly for network-intensive and storage-intensive workloads.
Use Cases and Ecosystem
Amazon Linux is best suited for teams running AWS-centric infrastructure. It works exceptionally well for containerized microservices (as a base for Docker and Kubernetes), serverless compute via AWS Lambda container images, and traditional server workloads on EC2. AWS also provides Amazon Linux container base images on ECR Public Gallery, making it straightforward to use as a minimal base image for production containers.
Limitations
The distribution is not designed for desktop or workstation use. Its primary distribution channel is the AWS Marketplace and EC2 AMI catalog; running it on bare metal outside AWS is possible but unsupported for AL2023. The software repository, while regularly updated, has a smaller package selection than RHEL or Fedora. Teams accustomed to Debian/Ubuntu tooling will face a learning curve with the rpm/DNF ecosystem.