Explainers

CIAM is customer identity: registration, consent, and login built for the people who buy from you, not the people who work for you. Here is how it differs from workforce IAM and when you need it.

OAuth 2.0 is authorization, OIDC adds authentication, and SAML is enterprise federation. Here is what each actually does, the token types, and a decision table for when to use which.

The four authorization models compared: RBAC (role), ABAC (attributes), ReBAC (relationship), PBAC (policy). What each is, where each breaks, and a decision table for choosing.

GEO is optimizing to be the source AI answers cite, not to rank in a list of links. Here is how it differs from SEO and AEO, why citation share is the metric, and what a GEO program involves.

A tiered directory of the specialised US cybersecurity consultancies worth a CISO's shortlist, from Optiv and Coalfire down to the boutiques, plus five questions that predict engagement quality.

A decision framework rather than another listicle: four compliance problem types, industry matching, five predictive evaluation criteria, and 2026 pricing benchmarks.

A post-money SAFE is the default at pre-seed and most seeds. Price the round when a lead wants a board seat and a price. Dilution math and the traps.

Series A buys a machine that turns capital into predictable growth, not a louder seed story. What A funds underwrite, and how to know you are early.

Valuation is the headline. Control is the operating system. Here is what is normal on a seed or A term sheet, what to fight, and what to ignore.

ChatGPT and Perplexity agree on only 11% of cited domains. Here is the three-tier media model that builds authority instead of a logo wall.

Pick outlets by whether the engine retrieves them for your buyer's questions. Prestige logos are not a citation strategy.

In B2B and AI search the company often gets retrieved through the person first. Here is how to point founder brand at the product.

GEO for a software company is owning the five questions a buyer asks an engine. The stack, the page types, and a 90-day program a small team can run.

Do not pick CIAM from a logo grid. Decide whether you need it, score five questions that discriminate, bake off four flows, and know when to stay.

AI engines assemble answers from three layers, not one ranking. Here is the parametric memory, retrieval index, live fetch model, an engine-by-engine comparison, and why blocking the wrong crawler token costs you a whole surface.

Query fan-out is how AI engines rewrite one prompt into several hidden sub-queries and retrieve each separately. Here is how it works, how to reconstruct your own fan-out footprint, and why Ahrefs found over a third of AI Overview citations skip the top 100 organic results entirely.

All five mainstream reverse proxies will work. Choose on operating model, meaning where configuration comes from, not on benchmark numbers you will never hit.

ChatGPT launched ads in February 2026, Google and Microsoft serve them from campaigns you already run, and Perplexity walked away entirely. Here is how the surface works, how it differs from search, and the tier constraint that decides whether it fits B2B.

SPF, DKIM, DMARC, ARC, MTA-STS, TLS-RPT, and BIMI in one page: what each layer proves, where the boundaries sit, and why every one of them degrades silently.