Selenium Page Load Strategy is a feature in Selenium WebDriver that determines how a webpage is loaded before further interactions occur, with three main strategies available: NORMAL, EAGER, and NONE. The NORMAL strategy waits for the entire page, including all resources like CSS and images, to load, whereas the EAGER strategy only waits until the DOM is accessible, allowing for interactions while some resources are still loading. The NONE strategy allows the WebDriver to proceed without waiting for any resources, optimizing execution speed but potentially leading to incomplete page interactions. Introduced in Selenium 4, this feature leverages the document.readyState property, which describes the loading state of a webpage, and can significantly influence test execution times, especially under different network conditions. Using cloud platforms like LambdaTest, users can execute tests with these strategies, benefiting from scalability and support for extensive browser and OS combinations, and can optimize performance by simulating various network conditions to measure page load times effectively.