To successfully serve ads using the MediaOS Ad Server, a few system configurations must be completed before assigning creative to any line item.
Getting Started with the MediaOS Ad Server #
Before assigning creative, make sure that your MediaOS plan includes the Ad Server feature and that your website is properly connected in the Websites section of MediaOS. You’ll also need to confirm that the MediaOS WordPress Plugin is installed on your site. Within the website settings under the Ad Server tab, assign a product to your connected website to enable ad placement functionality.
For websites not hosted on MediaOS, ensure that the corresponding HTML ad unit code has been placed in the correct locations on your site. This allows each ad to render in its assigned placement. If your site is hosted by MediaOS, this step is handled automatically and no additional code is needed.
Once this setup is complete, you’re ready to assign creative to a line item.
Assigning Creative to a Line Item #
Start by locating the line item you want to work with. Go to Delivery > Line Items, find the booked line item associated with a won contract, and click View to open its details. Inside the line item view, click the box beneath "Assigned Ad" to open the Ad Library for that specific account.
In the Ad Library, click + New to upload a new ad. Once the ad is uploaded, you’ll be taken to a confirmation screen where you can review the ad details. It’s important to check that the pixel size of the uploaded image matches the size of the ad unit. The MediaOS Ad Server uses this information to determine placement compatibility, so mismatched dimensions may prevent the ad from running.
If the ad is digital, be sure to include an Ad Target URL. Without a target URL, the ad will not serve, even if everything else is correctly configured. After confirming the details, save the ad, then click on the ad file to assign it to the line item.
Tip: Always upload both a desktop and mobile version of the ad to ensure your campaign reaches users across all devices. The MediaOS Ad Server supports assigning multiple creative assets to a single line item for flexible delivery.
When reviewing the Ad Library, any ad that has been successfully assigned will be indicated with a green square around its preview. This visual cue confirms that the asset is live and linked to a delivery item.
