Experimentation Platform (ExP) design element with the 'x' displayed as two crossed test tubes

Experimentation Platform (ExP)

Accelerating innovation through trustworthy experimentation

Experimentation Platform (ExP) is Microsoft’s foundational system for accelerating innovation through trustworthy experimentation. As part of CoreAI, ExP enables every AI builder across the company to design, run, and learn from high-quality A/B experiments with minimal friction. By combining rigor in experimentation science with modern, AI-driven workflows, ExP embeds experimentation directly into the product development lifecycle helping teams move seamlessly from idea to insight. From large-scale platform investments to developer-centric tooling, ExP empowers engineers, scientists, and product teams to validate hypotheses, measure real-world impact, and safely iterate on intelligent systems that reach billions of users.

ExP is led by Colin McFarland (opens in new tab).

Are you passionate about helping AI organizations innovate faster, building reliable systems at scale, or advancing the science of experimentation? Check out our open roles.

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