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Guides that stay current, and articles about what we are seeing. Filter by subject, or read everything.
How DNS resolves a name, step by step Root servers, TLD servers, authoritative servers and your resolver — one address bar, four lookups. 
The domain lifecycle: expiry, grace, redemption, delete A name does not become available the day it expires. Ninety days, four stages, and one expensive one. 
DNSSEC, in plain terms What it protects you from, what it does not, and why turning it on badly is worse than leaving it off. 
Domains in non-Latin scripts How internationalised names are encoded, why they look different in different browsers, and the homograph problem. 
The renewal price is the real price The first-year discount is an acquisition cost, and you pay it back for as long as you own the name. 
How model pricing works Input, output, cached reads, cached writes and reasoning tokens — the five numbers on an invoice, and which one usually surprises you. 
Context windows, and why you never get the whole number System prompts, tool definitions and reserved output all eat the window before your text does. 
Bring your own key: what each provider asks for One field for OpenAI, four for Azure, a service account for Vertex, keys or a role for Bedrock. 
Running inference in Europe, honestly Which providers actually keep your requests in the EU, and which merely bill you from it. 
What 'hosted in the EU' has to mean to be worth saying Where the data sits, who can compel its disclosure, and which claims are decoration. What a domain name actually is You are leasing a label from a registry, through a registrar, for a fixed term. What that means in practice. gTLD, ccTLD, sTLD and new gTLD: the four categories Why .com, .nl, .museum and .dev are governed by four different sets of rules — and which one applies to you. How to transfer a domain, and why it sometimes fails Auth codes, transfer locks, the sixty-day rule after registration, and what a losing registrar may and may not do. WHOIS, RDAP and who can see your details What GDPR changed, which extensions still publish everything, and where privacy is forbidden outright. Premium domains and premium renewals The registry sets the price, not the registrar — and the renewal can stay premium forever. Read this before you buy. Choosing an extension for what you are building When a ccTLD beats .com, when it does not, and the questions worth asking before you spend anything. How Anguilla ended up running the address book of the AI industry A ccTLD delegated to 15,000 people in 1995 now funds a meaningful share of a national budget. Ten years of new extensions: what actually stuck Hundreds launched in 2013. A handful matter. What separated them. Choosing a model for a job Capability, latency, price and context — in the order that actually matters for the thing you are building. Reasoning models, and when they are worth the tokens What thinking before answering costs, and the classes of problem where it pays for itself. Tool use and structured output How a model calls your code, why schemas beat prompting, and where it still goes wrong. Prompt caching, and how to actually benefit from it Cache writes cost more than normal input. Get the ordering wrong and caching makes you slower and poorer. The same model costs different amounts depending on where you run it One model, four hosts, four identifiers, four prices — and the cheapest is not automatically the right one. Giving an agent permissions the way you give a person permissions Why an agent should not get its own permission model, and what breaks when it does.
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