An account executive is assembling a client’s campaign using ads aimed to reach both mobile and desktop devices.What technology would they need to use in order to accomplish this?

HTML5 is the correct technology because it is a versatile web language that supports responsive design, allowing ads to adapt seamlessly across various screen sizes and devices, including both mobile and desktop. This ensures a consistent user experience regardless of the platform. Native apps are incorrect because they are standalone applications built for specific operating systems (like iOS or Android) and are not used for creating cross-platform ad creatives that run in web browsers. Display & Video 360 Marketplace is a platform for buying ad inventory, not a technology for creating ad formats. MP4-encoded video is a specific video file format and while it can be part of an ad, it's not the overarching technology that enables cross-device compatibility for the entire ad creative; HTML5 provides that framework.