Augmentative and Alternative Communication (AAC) refers to methods and tools that help individuals with communication challenges express themselves. This can include anything from simple picture boards to advanced speech-generating devices. AAC is used by people with various conditions, such as autism, cerebral palsy, or stroke, to enhance their ability to communicate effectively. AAC can be categorized into two main types: augmentative communication, which supports existing speech, and alternative communication, which replaces speech entirely. These tools can be low-tech, like sign language or communication books, or high-tech, like tablets with specialized software. AAC aims to improve the quality of life and social interaction for users.