SQL Tuning is the process of optimizing SQL queries to improve their performance and efficiency. This involves analyzing the execution plan of a query, identifying bottlenecks, and making adjustments to the query structure, indexes, or database configuration. The goal is to reduce the time it takes for the database to retrieve and process data. Effective SQL Tuning can lead to faster response times and better resource utilization, which is especially important in large databases or applications with high user demand. Techniques may include rewriting queries, adding indexes, or adjusting database parameters to enhance overall performance.