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Discover Your TRIZAN PlanThe trajectory of quantum computing in the popular business press follows a now-familiar pattern: breathless announcements of quantum supremacy milestones, followed by skeptical counter-analyses explaining why the milestone doesn't represent practical business utility, followed by broader confusion about whether quantum computing is real or not. IBM announced it had achieved quantum advantage in 2019. Google announced a quantum supremacy result the same year. Chinese research groups announced quantum superiority across multiple domains. And the practical business applications — the real-world optimization problems, drug discovery accelerations, and financial modeling improvements that quantum computing has long been promised to deliver — remain mostly in the research lab rather than the enterprise data center. This gap between the headline achievements and the practical business reality is real but narrowing, and the narrowing is happening faster than the previous decade of incremental progress suggested. The 2023-2026 period has seen quantum hardware quality improve dramatically: error rates per gate operation on leading systems have fallen by orders of magnitude, qubit coherence times have extended to enable deeper circuits, and the qubit counts on commercially available systems have grown to the range where certain problems of genuine commercial relevance are coming within reach. The consensus among serious quantum computing researchers has shifted from "quantum advantage in useful applications may be a decade away" to "quantum advantage in specific high-value application domains could arrive within the current strategic planning horizon." Understanding Quantum Advantage: When and Where It Actually Matters Quantum advantage — the condition in which a quantum computer can solve a problem faster or better than the best available classical computer running the best available classical algorithm — will not arrive simultaneously across all problem types. It will arrive first in the problem domains where quantum algorithms have the most profound theoretical advantage over classical algorithms, and it will take longer in domains where the theoretical advantage is smaller or where classical algorithms have been continuously improved. Cryptography and security represent the highest-urgency quantum application for most businesses, paradoxically not because quantum computers will help businesses but because they will threaten the security infrastructure that businesses depend on. Shor's algorithm — a quantum algorithm that can factor large integers exponentially faster than the best classical algorithms — breaks RSA and elliptic curve cryptography, which underpin the security of virtually every encrypted communication on the internet. A quantum computer with sufficient qubit quality and count to run Shor's algorithm at scale will be able to decrypt communications that are currently considered secure, including stored encrypted data that adversaries have collected in anticipation of this capability — the "harvest now, decrypt later" attack strategy that is already being executed by nation-state actors. The US National Institute of Standards and Technology completed its post-quantum cryptography standardization process in 2024, publishing the first post-quantum cryptographic standards: CRYSTALS-Kyber for key encapsulation and CRYSTALS-Dilithium and FALCON for digital signatures. The migration from current cryptographic standards to post-quantum standards is a multi-year enterprise infrastructure project that needs to begin now — not when