The significance of data mining in technology lies in its ability to uncover valuable insights from large datasets. It involves analyzing patterns, correlations, and trends that can lead to informed decision-making and strategic planning. By employing techniques like machine learning and statistical analysis, organizations can identify customer preferences, predict market trends, and optimize operations. Data mining is crucial in various industries, including finance, healthcare, and marketing, as it provides a competitive edge by transforming raw data into actionable intelligence.