The physical AI stack

Where value sits

Demand at the top, design tools at the bottom. Names are colored by score band. Select a name to open its scorecard.

  1. Cloud & software

    Hyperscalers and the software and storage they run. The demand side.

    Hyperscaler · Storage · Security software

  2. Power & cooling

    Electricity, cooling, and the data halls that house the racks.

    Power & energy · Cooling / thermal · Data-center infra · Solar power

  3. Networking

    Switches and optical links between chips, racks, and sites.

    Networking & optics

  4. Chips

    Accelerators, memory, and the analog and power ICs around them.

    GPU / AI accelerators · HBM / memory · Analog / power ICs · Quantum compute

  5. Foundry & packaging

    Fabs that print wafers and the packaging that turns dies into parts.

    Foundry · Packaging / OSAT

  6. Equipment & materials

    Lithography, wafer tools, test, and the materials fabs consume.

    Lithography · Wafer equipment · Test / metrology · Materials

  7. Design & IP

    EDA software and IP used to design a chip before tape-out.

    EDA / design

  8. Space & satcom

    Launch, spacecraft, satellites, and ground systems. Adjacent to the AI stack.

    Space launch · Spacecraft · Satellite communications · Ground systems · Earth observation

    Shallow coverage only. Show shallow names

Layers group the stack glossary roles. A name with roles in two layers appears in both. Scores are the same rule-based scorecards as underwrite; not investment advice.