Google Analytics allows marketers to track key metrics like conversions, goals, and traffic sources. It provides reports on audience behavior, goals completion, and actionable insights. Marketers can define goals and segments, track campaigns, and view customized reports. While free to use, it has limitations like not being real-time. To get the most from GA, marketers should register goals, link marketing channels, use UTMs, and analyze data to improve content and optimize campaigns. GA helps optimize websites, measure marketing efforts, and understand user journeys to increase conversions.