Leo Interop

Ensuring plug-and-play interoperability for the growing CXL® ecosystem

Deploy CXL-attached memory at scale with confidence

  • Rigorous testing of Leo Memory Controllers with industry-leading hosts, memory, and operating systems
  • Comprehensive testing including PCIe electrical, memory, CXL® compliance and system level for end-to-end coverage
  • Extensive testing with COSMOS software suite for Link, Fleet and RAS telemetry and diagnostics

Interop Bulletins

Hardware and Software Coverage

Example Tests

CXL® Compliance Tests

  • PCIe Electrical Testing
  • Transaction Layer Testing
  • Arbitrator and Multiplexer
  • Power Management Tests
  • Reset and Initialization Tests

System & Memory Tests

  • DDR Tests
  • Stress Tests
  • Traffic Tests
  • Security Tests
  • Reliability, Availability, and Serviceability

Breaking Through the Memory Wall: How CXL Transforms RAG and KV Cache Performance

This week at Supercomputing 2025, the AI infrastructure community is converging to explore the next generation of technologies enabling breakthrough performance at scale. Among the most critical challenges being addressed is the memory bottleneck that increasingly constrains AI deployments.AI workloads, particularly Large Language Model (LLM) applications, are fundamentally memory-bound…. Read more

Astera Labs at Supercomputing 2025: Advancing Rack-Scale AI Connectivity with Open Ecosystems

As AI models surge in complexity and require unprecedented reasoning performance, the industry is undergoing a transformative shift toward what we call “AI Infrastructure 2.0”—where the rack, not the server, becomes the new unit of compute. The scale and tight coupling required by today’s GPU-dense workloads demand ultra-low-latency, high-bandwidth communication across hundreds of… Read more

Astera Labs Completes Acquisition of aiXscale Photonics

Today, Astera Labs completed its acquisition of aiXscale Photonics GmbH, following the definitive agreement announced in October 2025. This marks an important step in our journey to deliver comprehensive connectivity solutions for AI Infrastructure 2.0.Why Photonics Matter for Scale-Up AIAs AI systems scale to hundreds of tightly integrated accelerators per rack, optical connectivity… Read more

Astera Labs’ Leo CXL Smart Memory Controllers on Microsoft Azure M-series Virtual Machines Overcome the Memory Wall

SAN JOSE, Calif.—Nov. 18, 2025—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced its Leo CXL Smart Memory Controllers enable customers to evaluate Compute Express Link® (CXL®) memory expansion capabilities for their specific workloads in the Azure M-series virtual machines (VMs) preview.Microsoft’s… Read more

Astera Labs Announces Fourth Quarter 2025 Financial Conference Participation

SAN JOSE, CA, U.S. – Nov. 13, 2025 – Astera Labs (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced that it will participate in the following upcoming financial conferences during the fourth quarter 2025:2025 RBC Capital Markets Global Technology, Internet, Media & Telecommunications Conference on Nov. 19th… Read more

Astera Labs Announces Financial Results for the Third Quarter of Fiscal Year 2025

Record quarterly revenue of $230.6 million, up 20% QoQ and 104% YoYStrong Q3 revenue growth driven by new AI platform ramps featuring multiple product familiesScorpio fabric switch design wins expand to several platforms at multiple hyperscaler customersSAN JOSE, CA, U.S. – November 4, 2025 – Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions… Read more

Astera Labs to Acquire aiXscale Photonics

Deal is expected to help enable scale-up photonic chiplets in AI Infrastructure 2.0 and accelerate Astera Labs’ deployment of rack-scale solutionsSAN JOSE, Calif.—October 22, 2025—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced that it has entered into a definitive agreement to acquire aiXscale… Read more

COSMOS Explorer: Link Management Tools Demo

Astera Labs’ COSMOS Explorer is a powerful tool for link monitoring, management, and diagnostics. It offers a rich set of system configuration options for you to optimize performance with critical signal quality telemetry such as bit error rate, eye metrics, and link event logs. COSMOS Explorer allows you to modify link settings and get customized diagnostics in one GUI for all of our products.In… Read more

COSMOS and OpenBMC Demo at OCP 2025

Through collaboration with ASPEED Technology and Insyde Software, Astera Labs has extended COSMOS features into production AI systems to standardize management, monitoring and diagnostics of retimers and scale-up switches with OpenBMC and DMTF Redfish APIs. COSMOS now offers:Standard APIs for configuration, monitoring and lifecycle controlActionable insights with granular visibility into… Read more

CXL Memory Innovation at OCP 2025

Rack-scale memory innovation is unlocked with CXL. At OCP Global Summit 2025, Astera Labs demonstrated how Leo CXL Smart Memory Controllers can eliminate AI infrastructure bottlenecks with regards to memory capacity and bandwidth.3x concurrent LLM instances at higher AI throughput3x increased throughput w/ CXL at higher user count3x lower latency with CXLHigher GPU utilization on average with… Read more