What is Trusted Automated Exchange of Intelligence Information (TAXII™)

A transport mechanism for sharing cyber threat intelligence

Trusted Automated Exchange of Intelligence Information (TAXII™) is an application layer protocol for the communication of cyber threat information in a simple and scalable manner.

TAXII is a protocol used to exchange cyber threat intelligence (CTI) over HTTPS. TAXII enables organizations to share CTI by defining an API that aligns with common sharing models.
TAXII is specifically designed to support the exchange of CTI represented in STIX.

Website: https://oasis-open.github.io/cti-documentation/