As India celebrated GST Day on July 1, public attention rightly focused on one of independent India's most transformative economic reforms. Since its launch on 1 July 2017, the Goods and Services Tax has unified fragmented markets, widened the formal tax base, accelerated digitisation through e-invoicing and e-way bills, strengthened AI-driven compliance, and evolved into one of the world's largest technology-enabled tax ecosystems. Yet GST's most important evolution is no longer fiscal or administrative. It is strategic.