SigFig is a financial technology company founded in 2007 whose mission is to make investing more accessible and affordable for everyone. SigFig uses Snowplow, an open-source data collection platform, to track user behavior and metrics on their website similarly to Google Analytics. Snowplow provides critical data for SigFig's reporting and data science needs by replicating their production environment. The document provides examples of how SigFig uses Snowplow data to analyze metrics like user interactions on pages, traffic sources, landing page and funnel performance, and A/B testing results.