Melbourne, Australia - August 2025 - In today's competitive digital publishing environment, every ad impression counts - but simply adding more ad units isn't the answer. Too many ads in the wrong places can lead to lower engagement, decreased viewability, and ultimately, reduced yield.

Magnite's Slot Manager solves this problem by intelligently inserting additional ad units only when and where they make sense - ensuring optimal revenue without hurting the user experience.

How It Works

Slot Manager uses a site's own HTML structure to identify the best insertion points for ads while maintaining a smooth, user-friendly reading experience. A typical configuration might:

• Target specific elements in the article — for example, every 3rd tag inside a main content container.
• Insert ads “after” the target element so they appear at natural breaks in the content.
• Load only when in view — starting insertion a set percentage of a viewport away to preserve fast page load times and boost active view rates.
• Serve premium MREC sizes (336x280 & 300x250) that balance monetisation and user experience.
• Apply strict exclusion rules to avoid disruptive placements, such as:
  • No ads immediately before images.
  • No ads before fixed “code block” elements.
  • No ads at the very end of article content.

Why Publishers Love It

• Incremental Revenue — Capture more impressions on-page without redesigning your template.
• High Viewability - Ads load only when they have the best chance to be seen.
• Flexible Controls — You decide where, when, and how ads are injected.
• Seamless Styling - Add your own CSS classes to match your brand's design system.

The Result

With Slot Manager, publishers can run additional high-value MREC inventory throughout long-form articles, increasing programmatic fill while maintaining strong user engagement. Configurations can be tested and refined - adjusting insertion frequency, viewability thresholds, and creative sizes - all within the Magnite Demand Manager environment to find the ideal balance between yield and reader experience.

For more information contact the interplay AdOps team - [email protected]