RTM, or Release to Manufacturing, is a stage in the software development process where a product is considered complete and ready for distribution. At this point, the software has undergone extensive testing and is deemed stable enough for users. The RTM version is often the one that will be sent to manufacturers or made available for download. Once a product reaches RTM, it typically enters the final phases of production, including packaging and marketing. This stage is crucial as it marks the transition from development to actual use, allowing users to access the software and benefit from its features.