TCP/IP: The virtue of simplicity “Hourglass” Architecture any any device task any person the Internet’s not-so-secret sauce any CTSB, NRC, “The Internet’s Coming of Age” (2001) mediumFriday, November 30, 12The ﬁrst of these lessons is to do as LITTLE as possible. While competing standards tried to specify everything in detail, the IP protocol did the smallest, necessary thing: it speciﬁed the format of the data that would be exchanged betweenmachines. Everything else could vary, from the transport protocols and transport medium all the way to the kinds of applications and services that were exchanging that data. Jonathan Zittrain refers to this as the “hourglass architecture” of theinternet. In our work on the Industrial Internet, we shouldn’t forget to think about the smallest things we need to agree on. Vibrant platforms grow from small beginnings.