# User space Implementing a transport protocol in user-space helps enable quick iteration of the protocol, as it is comparatively easy to evolve the protocol without necessitating that clients and servers update their operating system kernel to deploy new versions. Nothing inherent in QUIC prevents it from being implemented and offered by operating system kernels in the future, should someone find that a good idea. ## Many implementations One obvious effect of implementing a new transport protocol in user-space is that we can expect to see many independent implementations. Different applications are likely to include (or layer atop) different HTTP/3 and QUIC implementations for the foreseeable future. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://http3-explained.haxx.se/en/quic/quic-userspace.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.