Publisher: What controls are available and what happened to pubvendors?

What publisher controls are available? What happened to Pubvendors?

The goal of pubvendors.json was to enable publisher control over their vendor relationships and data purposes but was ultimately found to be an incomplete and error-prone solution.

In v2 of the TC String, a segment of information enables publishers to define restrictions. Another segment defines their vendor relationships in a list of allowed vendors. These publisher controls replace the pubvendors.json solutions and is to be deprecated after a transition phase for v2 implementation.