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High-density workloads and AI clusters are reshaping thermal strategies for many operators. Hybrid approaches appear to be emerging as the new standard for cooling, but integrating liquid cooling at scale introduces operational, design and supply chain hurdles that need to be negotiated. In 2026 the challenge is selecting cooling strategies that deliver on today’s performance and sustainability goals while remaining cost-effective and flexible enough to handle rising rack densities and adapt to future technologies. In particular we discuss:
- Where liquid cooling is gaining traction, and where air still makes sense
- Key lessons from early adopters of immersion and direct-to-chip cooling
- Designing thermal systems that can flex with future density increases
- Emerging approaches to water conservation and energy-efficient cooling
- Global market signals: what cooling adoption could look like by 2026 and beyond
