Enabling SRA allows a publisher to make a single request for all ad slots on the AMP page which gives a publisher the ability to do roadblocking and competitive exclusions. This very similar to the behavior achieved on non-AMP pages when using this method in GPT.
In order to use this feature, add the following meta tag to the head of the AMP page:
<meta name="amp-ad-doubleclick-sra"/>
Note that SRA is only available if:
- The AMP page is served from a valid AMP cache, and
- The publisher does not use
remote.html.
Note also that Refresh is not compatible with SRA. If both SRA and Refresh are enabled on the same slot, Refresh will be disabled in favor of SRA.