The amp4ads-v0.mjs script is the runtime component responsible for executing AMPHTML Ads on web pages. It ensures that ads built with AMPHTML specifications load quickly and perform efficiently without negatively impacting the user experience. This script manages the lifecycle of AMPHTML ads, handling tasks such as lazy loading, resource management, and sandboxing to prevent malicious behavior. It enforces strict rules for ad creatives, leading to predictable performance and a more secure ad environment. By offloading rendering and layout calculations to the AMP runtime, it helps deliver a consistently fast experience for ad content, which is critical for mobile users. This script runs within the browser context and is designed to work alongside the main AMP runtime (if present) or standalone for ad-specific implementations. It helps manage the display, tracking, and user interaction with AMP-compliant advertisements, ensuring they adhere to the performance and security standards set by the AMP project.