Google Apps Script (GAS) is a cloud-based JavaScript platform developed by Google that allows users to extend and automate tasks across Google Workspace products like Google Sheets, Docs, Forms, Calendar, and Gmail. It's a serverless environment, meaning Google handles the infrastructure, allowing developers to focus solely on writing code. Artificial Intelligence (AI) refers to the simulation of human intelligence in machines, enabling them to learn, reason, and self-correct. Machine Learning (ML) is a subset of AI that focuses on systems learning from data. Large Language Models (LLMs) are advanced ML models trained on vast text datasets, capable of understanding, generating, and processing human language, making them central to Generative AI which creates new content.