Online video advertising is a form of digital advertising that leverages the power of videos to promote a product, service or brand. Essentially, it involves the creation and distribution of video content that is used to target specific audiences and persuade them to take action, such as purchasing a product, signing up for a service, or engaging with a brand. Online video advertising can take many forms, including pre-roll ads, in-stream ads, outstream ads, and social video ads. It often uses data-driven targeting techniques to identify and reach users who are most likely to be interested in a particular product or service. One of the key advantages of online video advertising is that it is highly engaging and can deliver a lot of information in a short period of time. It has been shown to increase brand awareness, improve engagement rates, and drive website traffic and conversions. However, online video advertising can also be expensive, and achieving a return on investment requires careful planning, execution and optimization. To be successful, advertisers need to create compelling video content that resonates with their target audience and delivers a clear message, while also leveraging data to optimize their ad targeting and placement strategies.