VAST (Video Ad Serving Template) is an IAB standard that allows video ads to be delivered across different video players, websites, apps, and connected TV environments. VAST enables advertisers, publishers, and ad servers to communicate using a common format, making video ad delivery and tracking more reliable.
In today’s digital advertising landscape, video advertising has become an essential part of many marketing strategies. As consumers increasingly turn to online platforms for entertainment and information, businesses use video campaigns to reach and engage their target audiences.
What is VAST
VAST stands for Video Ad Serving Template. It is an XML-based standard that defines how video ads are delivered and displayed across different platforms and devices. Developed by the Interactive Advertising Bureau (IAB), VAST enables video ads to be served consistently across websites, mobile applications, and other digital environments.
By following the VAST protocol, ad servers and video players can communicate using a common format, helping ensure reliable ad delivery, tracking, and compatibility across a wide range of platforms.
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How VAST works
VAST works by using an ad server to deliver video ads to websites, mobile applications, or video players. When a user requests video content, the player sends a VAST ad request. The ad server then responds with a VAST XML file containing information about the ad creative, media files, and tracking events. The video player processes the response and displays the ad to the user.
VAST uses several components to ensure that ads are delivered correctly:
VAST tags
These are pieces of code used to request ads from the ad server. There are two main types of VAST tags: wrapper tags and inline tags. Wrapper tags point to another VAST ad server, while inline tags contain the actual ad information.
VAST media files
These contain the video ad creative. Common formats include MP4 and other video formats supported by the publisher’s video player.
Tracking URLs
These URLs are included in the VAST response and are used to measure ad performance, including impressions, clicks, and video completion events.
VAST-compatible ad servers are responsible for hosting and delivering ads to websites, applications, and video players. They can operate as standalone solutions or as part of larger advertising platforms.
Ways to Use VAST Video Ads
VAST video ads can be used in different ways across video advertising campaigns. Some examples of how they can be used include:
Pre-roll ads
Pre-roll ads are ones that play before a video begins. They are commonly used on video sharing platforms like YouTube and Vimeo. Pre-roll ads can be highly effective because they are displayed to users who are actively seeking out video content, making them more likely to be engaged with the ad.
Mid-roll ads
Mid-roll ads play during a video. They are commonly used on longer videos, such as TV shows or movies. They can be effective because they are displayed to users already engaged with the content, making them more likely to be receptive to the ad.
Post-roll ads
Post-roll ads play after a video has finished. They are commonly used on video sharing platforms like YouTube and Vimeo. They can be effective because they are displayed to users who have just finished watching a video.
In-banner video ads
They play within a standard display ad banner. They allow advertisers to deliver video content within a familiar display advertising format.
Social media ads
VAST ads can also be used on social media platforms like Facebook, Instagram, and X. These ads can be highly targeted based on user demographics, interests, and behaviors, making them an effective way to reach a specific audience.
Connected TV ads
VAST ads can also be delivered on connected TV platforms such as Roku and Amazon Fire TV. These platforms allow advertisers to deliver ads to users who are streaming video content on their TVs.
Interactive video ads
Interactive video ads allow users to interact with ad content. For example, a user might be able to click on different elements within the ad to learn more about a product or service. Interactive video ads can be highly engaging and can help to increase brand awareness and engagement.
Benefits of Using VAST Ads
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VAST ads offer several benefits for advertisers. Some of the key advantages include:
Compatibility
They are compatible with a wide range of video players and platforms, making it easier to reach a large audience.
Targeting
They can support audience targeting based on user demographics, interests, and behaviors, depending on the advertising platform being used. This can help to ensure that your ads are being delivered to the right audience.
Measurement
They include tracking URLs that can be used to measure the performance of your ads. This can help advertisers measure and optimize campaign performance.
Flexibility
They can be used in a variety of different formats, including pre-roll, mid-roll, and post-roll ads, as well as in-banner video ads and interactive video ads. This gives advertisers a lot of flexibility in how they deliver their ads.
Engagement
Video ads can be highly engaging, allowing advertisers to tell a story and connect with users on an emotional level. This can help to increase brand awareness and engagement.
Set up a VAST Video Ad Campaign in HilltopAds
When creating a Video/VAST campaign and selecting a VPAID URL video format, you’ll have access to the VAST/VPAID Tag Tester. This tool allows you to preview how your ad will appear in the publisher’s player before launching your campaign.
The testing process is straightforward. Enter a link to your XML feed or choose the Custom XML option and paste your VAST XML file into the designated field. Then click the Load Ad button.
Once the test starts, the video will play in the preview window. If there are any issues with the ad, the log console will display error details below the video, helping you identify and fix problems before launching the campaign.
VAST ads are a powerful tool for video advertising, helping advertisers deliver campaigns across a wide range of video players and platforms. By following the VAST standard, advertisers can improve compatibility, tracking, and campaign scalability across different digital environments.