TAXII is used in conjunction with STIX and supports the exchange of threat information over HTTP/HTTPS message protocols. Just like in STIX, multiple new features have been added to TAXII since the first version 1.1 was released in 2012. TAXII 2.x is the latest version and is considered an augmentation of the older version of TAXII 1.x. While the previous versions were designed to align with XML-based STIX format, the new versions of TAXII are format-agnostic and do not rely on any specific threat intelligence format. As the current versions of TAXII are not tied to any specific format or message protocol, they can accommodate multiple threat-sharing communities with different networking protocols and message format constraints.