What is Cyber Threat Intelligence (CTI) ?

Cyber Threat Intelligence (CTI) is the precise and contextualized information about emerging or existing cyber threats that have been refined and analyzed to provide actionable advice which allows the organizations to take informed decision to proactively defend or mitigate any cyber threats. Cyber Threat Intelligence (CTI) provides valuable knowledge with context about the adversaries and their motivations, capabilities, goals, including the tools and methods that adversaries use to conduct cyber-attacks.

In a nutshell, Cyber Threat Intelligence (CTI) is the information that is collected, relevant, fully contextualized, filtered and analyzed to answer core questions regarding any cyber threats that an organization can face, such as who is likely to attack what assets, where, when, how and why.
Note that just information is not intelligence! but the information is raw material to produce intelligence through extensive analysis. Producing Intelligence involves a comprehensive process of collecting, processing, and analyzing data. The main difference between information and true intelligence is the analysis.