Performance cookies, also known as analytics cookies, are used to collect anonymous data about how users interact with a website, such as page views, time spent on site, and user flow, to monitor and improve the site's performance, design, and functionality. They gather information such as page visits, loading speeds, and errors without collecting personally identifiable information, and the aggregated data helps website owners identify areas for improvement.

Functional cookies, or "functionality cookies," remember user preferences and settings to enhance a website's performance and provide a personalized experience. They enable specific features like remembering login details, language selections, and user choices, though they are not strictly necessary for the website to run. Examples include auto-filling forms, enabling web chat, and personalizing content based on past interactions.

Targeting cookies are small data files that track a user's online behavior across different websites to build a profile of their interests and browsing habits. This information is then used to deliver personalized advertisements, often called targeted or interest-based advertising, to the user on other sites they visit. These are typically persistent third-party cookies that follow users across the web.