We may also share data about activity on our websites with third-party service providers for analytics of our website performance.</p> <h2 id="4whydoesfastlyusecookies">4. Why does Fastly use Cookies?</h2> <p>Different cookies perform different functions. Some cookies will always be used and some cookies are only used if you opt in to them. For example, we use cookies to analyze how our websites are performing and what content our visitors are interacting with.