PRESTOplay for Addressable TV Advertising, an extension of castLabs PRESTOplay suite, enhances the existing comprehensive hybrid video player SDKs to support the upcoming Next Generation of ad-insertion technology - currently referred to Client-Side/Server Guided Ad Insertion by the Industry (SGAI). This offering provides a transformative approach to ad insertion in streaming media, leveraging HLS Interstitials and DASH MPD insertion events. It optimizes the end-to-end ad insertion performance and end user experience. This ensures a scalable, efficient, and streamlined process for ad insertion, making PRESTOplay a powerful tool for everybody aiming to increase ad revenues while maintaining a superior viewer experience.