Using Metrics to Investigate, Evaluate and Decide is a presentation about using web analytics and metrics to measure the performance of online marketing campaigns and websites. It discusses tools like Google Analytics, Facebook Insights, Twitter analytics and others that can track metrics like website traffic, social media engagement, search traffic and more. The goal is to set objectives for campaigns and sites, then use analytics to see what strategies and content are most effective at meeting those goals and driving actions like donations, purchases or signups. The presenters provide examples of how nonprofits can use various analytics to improve their online strategies.