Explore the process of extending HTTP protocols through a talk given at EuroPython 2020. Learn about an iterative strategy for identifying and standardizing key features of API guidelines within the Internet Engineering Task Force (IETF). Discover the steps involved, including feature landscaping, stakeholder identification and engagement, prototyping, and drafting internet standards. Examine two practical examples: the rewriting of the Digest header RFC3230 with clarifications for implementors, and the proposal of new RateLimit headers. Gain insights into engaging with major implementors like Microsoft, Red Hat, and Kong. Understand the importance of backing API guidelines with internet standards and the potential impact on service providers.