The International Technology Roadmap for Semiconductors (ITRS) was the authoritative, globally synchronized industrial master plan that single-handedly orchestrated and sustained Moore's Law from 1998 to 2016, dictating the unified timeline for every supplier, chemical manufacturer, and lithography vendor worldwide to guarantee that the physics of the next semiconductor node would be achieved exactly on schedule.

The Synchronization Problem

• The Supply Chain Chaos: Building a 5nm transistor is impossible for a single company. Intel designs the chip architecture, ASML builds the $200 million EUV laser, Tokyo Electron builds the atomic etchers, and Shin-Etsu synthesizes the ultra-pure silicon crystals.
• The Capital Risk: If ASML spends $2 billion inventing an EUV laser, but Intel decides to delay 5nm by three years, ASML goes bankrupt. The entire industry faced an existential "chicken or the egg" investment risk.

The Master Score

• Fifteen-Year Outlook: The ITRS functioned as an encyclopedic crystal ball. Every two years, hundreds of top scientists globally locked themselves in a room and established strict targets predicting exactly what the physical limits of materials, metrology, and interconnects must look like up to 15 years into the future.
• The Mandate: It explicitly told ASML, "If Moore's Law is to continue, we absolutely must have a 13.5nm wavelength laser commercially viable by exactly the year 2014, and the minimum metal pitch must be exactly 30nm." This unified roadmap gave the entire supply chain the confidence to collectively risk billions of dollars in synchronized R&D, knowing the entire ecosystem was marching to the exact same drumbeat.

The Pivot to IRDS

In 2016, classical 2D "More Moore" scaling stalled so violently that a simple linear roadmap of shrinking dimensions became impossible. The ITRS was formally dissolved and replaced by the International Roadmap for Devices and Systems (IRDS), shifting the entire global focus away from pure transistor shrinking toward System-Technology Co-Optimization (STCO), 3D packaging, and specialized architectures like neuromorphic computing.

The ITRS was the ultimate conductor's score — the greatest, most successful collaborative engineering triumph in human history, physically forcing an impossible rate of mathematical progress across an anarchic, multi-trillion-dollar global supply chain for two unbroken decades.