This document discusses evolving approaches to conversion tracking and optimization across paid search and other digital marketing channels. It notes that conversions were once a nice-to-have secondary goal but are now a core focus, and that channels have blurred together, making attribution more complex. The document advocates testing across channels, using all available analytics and conversion tracking tools, integrating efforts wherever possible, and continually optimizing practices rather than relying on past formulas. Change and exploration are important to leverage new opportunities across what were once separate "conversion channels."