What approach do demanding transparency and using a whitelist or blacklist help to ensure?

The approach of demanding transparency and utilizing a whitelist or blacklist is crucial in ensuring brand safety. By requiring transparency, marketers can have clear visibility into where their ads are being placed, helping them avoid environments that might harm their brand's reputation. Whitelists allow advertisers to specify which websites or applications are approved for ad placements, ensuring that ads only appear in safe and relevant contexts. Conversely, blacklists can be used to block ads from showing on sites that are deemed inappropriate or risky for the brand. This method protects the brand from being associated with unsuitable content or compromising environments, therefore reinforcing the principle of brand safety.

Ad unit sizes, ad impression counts, and audience targeting, while important aspects of digital advertising, do not directly relate to the fundamental goals of ensuring that advertisements appear in safe, controlled environments as is achieved through transparency and the use of whitelists or blacklists.