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Pathfinding Cloud Architecture for CXL with Dan Ernst of Microsoft Azure | Utilizing Tech 4×10

Cloud architects have long wished for more flexibility in how memory is provisioned in servers, and CXL is finally delivering on a decade of promises. In this episode of Utilizing Tech, Stephen Foskett and Craig Rodgers talk to Dan Ernst of Microsoft, who is deeply involved in bringing CXL-attached memory to fruition within Azure. Dan was previously involved in the Gen-Z effort, and feels that CXL picks up the baton and brings valuable real-world benefits to cloud server architecture. Memory has a bigger impact on overall IT platforms than many are aware, and is already the costliest component in large servers. Per Amdahl’s Law, it makes sense to look for cost savings in memory. And this is doubly the case because DIMMs only come in certain sizes so memory is usually over-specified. CXL memory modules cost a bit more than a DIMM, but this is offset by efficient right-sizing, and CXL is already cheaper than 3D stacked DIMMs.

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About the author

Stephen Foskett

Stephen Foskett is an active participant in the world of enterprise information technology, currently focusing on enterprise storage, server virtualization, networking, and cloud computing. He organizes the popular Tech Field Day event series for Gestalt IT and runs Foskett Services. A long-time voice in the storage industry, Stephen has authored numerous articles for industry publications, and is a popular presenter at industry events. He can be found online at,, and on Twitter at @SFoskett.

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