Dr. Alistair Cockburn, consultant, poet, traveler.
His main consulting page is at
https://alistaircockburn.com.
This page is the carryover from the original site, take a look at its evolution in:
The original "Hexagonal Architecture" article, preserved URL from 2005 is at
https://alistair.cockburn.us/hexagonal-architecture/
also archived at
https://web.archive.org/web/20140329201018/http://alistair.cockburn.us/Hexagonal+architecture
For his list of books and other goings on, see
https://alistaircockburn.com/Everything-else
Have fun