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Supplemental Explanation
Cookies
CODE Marketing cloud saves information to recognize users in cookies.
There are three types of cookies available, starting with _ctass_, _ctauu_ and _ctarc_. Cookies are different keys according to each site they are created on in the CODE Marketing cloud account.
Cookies are saved according to the site domain they are used on. Subdomains are removed from the domain. For example, search.example.com and mypage.example.com are both saved in .example.com`. Therefore, search.example.com and mypage.example.com can be managed as a single site on CODE Marketing cloud.
※ Third-party cookies are only used for cross-domain functionality.