Traffic sources refer to the various channels through which visitors arrive at a website. These sources can include direct traffic, where users type the website's URL directly into their browser, as well as organic search traffic from search engines like Google. Other common sources are referral traffic from links on other websites and social media traffic from platforms such as Facebook or Twitter. Understanding traffic sources is crucial for website owners and marketers, as it helps them identify which channels are most effective in attracting visitors. By analyzing these sources, they can optimize their marketing strategies, improve user engagement, and ultimately increase conversions on their site.