When to use iframe
Iframe is recommended especially for fullscreen campaigns with overlapping backgrounds, in case of conflicts with website styles, or if there are collisions due to CORS or other technical limitations. Iframe ensures that the campaign is rendered consistently and is not affected by the CSS or scripts of the page.
Recommended use:
Use iframes exclusively for full-screen campaigns. In other types of displays (boxes, sticky, inline), iframes can cause unwanted overlaying of page content or impair the user experience. Unless there is a technical reason, it is always better to leave the standard campaign display directly in the page DOM.
Limitations of iframe
When using iframe, keep in mind that some resources and features may not be available:
fonts defined on the original page
data objects (e.g., dataLayer)
global variables and page scripts
some integration or behavioral links