The arithmetic of desert farming, scored.

The canonical personal brand, exact match to the site itself. The address anyone who has met him once will guess first. This is the front door; everything else redirects here.

A five-letter surname in his home registry — rare air. Ideal for email (christian@strunden.ch) and for Swiss and European counterparties, and it quietly signals establishment without saying a word.

The site's own positioning sentence as an address — the one nobody forgets after hearing it once. Long, yes; that is why it works. Redirect to the main site; use it in talks and articles.

The .ch mirror of the primary .com, in the registry his Basel counterparties actually type. Cheap insurance against impersonation and confusion.

Nine characters, easy to dictate across a noisy phone line, clean as an email host (cs@cstrunden.com). The practical workhorse.

Says exactly what he does, in the discreet register he wants. The sensible fallback should the personal name ever be unavailable in a given TLD.

Name and region in one word. Useful for a MENA-facing landing page, conference materials, or a future Arabic-language surface.

Claims the discipline rather than a practice within it. The natural home for the future article platform — the "slow platform for new ideas" from his note.

How people will describe him after a single introduction. A memorable spoken name for any future public-facing surface.

His actual company name — the address institutional counterparties will look for when they check whether he is real. Bridges the legacy identity and the new brand. If a "Greentech family" of domains is ever built, this is its stem — not a generic suffix.

Available — but only worth registering together with its hyphenated twin, and never as the lead. Two structural caveats: greentech.com itself is permanently taken (the family would be built around a stem it can never own), and "greentech" is the noisiest register in the world — Cleantech, solar, batteries — where a two-person desert-agronomy practice is invisible and sounds like an energy startup. The matching pair greentechfarming.ch / greentech-farming.ch is also free and costs a few francs a year if the set is completed.

The hyphenated twin of #11. The hyphen rule from the desert-green.com discussion applies in full: hold both spellings or neither — registering only the hyphenated form leaks a share of type-in traffic to the unhyphenated owner forever. As a pair they are acceptable bench insurance (~USD 20/year); as a primary brand they would rank below the trio above on distinctiveness, searchability, and register.