Description: A syntax tree is a tree-like representation of the syntactic structure of source code. This concept is fundamental in programming as it allows for the decomposition of code into its basic components, thus facilitating analysis and understanding. Each node of the tree represents a syntactic construct, such as expressions, statements, or code blocks, and the branches indicate the hierarchical relationship between these elements. In the context of programming languages, the syntax tree is used to validate and transform code, ensuring that language rules are followed and optimizing the compilation process. The tree representation allows developers and code analysis tools to better understand the logic and structure of the program, resulting in more efficient debugging and improved code quality. Additionally, the syntax tree is essential for implementing advanced features such as autocompletion and refactoring, as it provides a clear view of how different parts of the code relate to each other.