XMLHttpRequest Level 1

XMLHttpRequest Level 1 is a technology in web development that allows websites to send and receive data from servers asynchronously, meaning without reloading the entire page. It enables dynamic updates to web content, such as loading new information or submitting forms in the background. This leads to more interactive and responsive user experiences. The standard provides a way for scripts to communicate with servers using different data formats like text or XML, making web applications more efficient and fluid in operation.