PDF Solutions provides data analytics and manufacturing intelligence software to the semiconductor industry. Its core product is the Exensio platform, a software suite that ingests and analyzes manufacturing data across fabs, test floors, and assembly operations. Customers use Exensio to improve chip yields, reduce defects, accelerate process development, and deploy AI/ML models in production. Exensio is sold on multi-year subscription or license contracts, with renewals and expansions as the primary revenue driver. Beyond Exensio, PDF Solutions offers several complementary products: Cimetrix embeds in semiconductor equipment to enable factory connectivity, earning a per-tool runtime license each time equipment ships; secureWISE (acquired in 2025) is a managed secure connectivity network linking fabs and equipment vendors globally, with near-universal adoption in 300mm fabs; Characterization Vehicle systems are proprietary test chips used by foundries to accelerate yield learning; DirectScan (eProbe) performs contactless electrical inspection on wafers in-line; and Sapience connects enterprise systems like MES and ERP to align manufacturing and financial workflows. PDF Solutions sells through a direct sales force to foundries, IDMs, fabless companies, OSATs, and equipment makers. Revenue is roughly 83% platform-based and 17% volume-based, with approximately 94% recurring overall. The company's growth strategy centers on positioning itself as shared AI-driven infrastructure across the semiconductor supply chain, integrating data generation, secure connectivity, and analytics into a single end-to-end platform.