Iroh 1.0 is a stable release of a networking protocol that allows devices to connect directly using keys instead of IP addresses, providing a more secure and efficient way of communication. The protocol is open-source and has been in development for over 4 years, with a growing number of users and use cases. Iroh provides a range of features, including support for multiple programming languages, custom transports, and local-first configurations. The project offers additional services, including customized hosting and monitoring, to support its development.