Paid advertising refers to any promotional content or campaign that is funded by a brand or creator to reach a defined target audience beyond what organic reach alone can achieve. On YouTube, paid advertising takes the form of YouTube Ads managed through Google Ads. Paid campaigns are typically measured by impressions, reach, click-through rate (CTR), conversion rate, and ROI (Return on Investment). While paid advertising can accelerate awareness and channel growth, it works best when paired with strong owned media content and a well-optimized metadata strategy that supports long-term organic reach.