Technology Readiness Level (TRL) is a systematic metric used to assess the maturity of a technology. It ranges from TRL 1, where basic principles are observed, to TRL 9, where the technology is fully operational and proven in real-world conditions. This scale helps organizations evaluate the development stage of their innovations and make informed decisions about funding and further research. TRL is commonly used in various fields, including NASA for space exploration and the Department of Defense for military applications. By categorizing technologies, stakeholders can better understand risks, allocate resources effectively, and streamline the transition from research to practical implementation.