All servicesBuild

Infrastructure & security

Infrastructure described as code, and Zero Trust access that does not rest on a text message.

The problem

A product’s security is not decided at launch. It is decided in how the infrastructure is described, how access is granted and how secrets travel.

We describe infrastructure as code — what is not in the repository does not exist — and replace standing access with identity verified on every request. One-time codes over SMS are never the answer: a number can be hijacked, and silently.

What is included

  • Infrastructure described as code, reproducible from one environment to the next
  • Zero Trust access: identity verified on every request, not a perimeter crossed once
  • Authentication with hardware keys or passkeys — never a one-time code over SMS
  • Secrets managed outside the repository, distinct per environment
  • Backups verified by an actual restore, not by the presence of a file

How it works

  1. 01

    Map

    What exists, who reaches it and through where. The surprises are here, not in the target state.

  2. 02

    Describe

    Infrastructure moves into code. What is not in the repository does not exist.

  3. 03

    Close

    Standing access becomes verified access. SMS leaves the authentication path.

  4. 04

    Prove

    A restore is run for real. A backup never restored is not a backup.

Frequently asked

Why rule out SMS codes?

Because a phone number can be hijacked at the carrier, and that hijack leaves no trace on the victim's side. A passkey or hardware key resists phishing; an SMS does not.

Do we have to migrate everything at once?

No, and that would be the surest way to fail. We move perimeter by perimeter, keeping a way back at every step.

Can you work with our current host?

Yes. Changing host is a separate decision, made on its own merits and not in passing.

Other services

Got a project? Let's talk.

Describe your project in a few lines. We come back within 24 hours with an honest first read — and, if it fits, a scoping call with no strings attached.

Talk about this service
Talk to the Discovery AgentOpen in full
Command

Agent

Talk to the Discovery AgentFrame your project in eight questions.

Act

Dark themePin the site's appearance
Light themePin the site's appearance
System themeFollow the system preference again
Switch the site to FrenchFrançais
Labs — ProductFilter Labs by type
Labs — PrototypeFilter Labs by type
Labs — ResearchFilter Labs by type
Labs — Reset filtersClear every Labs filter
Journal — EngineeringFilter the Journal by category
Journal — SecurityFilter the Journal by category
Journal — Agent-NativeFilter the Journal by category
Journal — StudioFilter the Journal by category
Journal — Reset filtersClear every Journal filter
Tutorials — BeginnerFilter tutorials by level
Tutorials — IntermediateFilter tutorials by level
Tutorials — AdvancedFilter tutorials by level
Tutorials — Reset filtersClear every tutorials filter

Services

DiscoveryFrame the product before the first line of code, so the budget builds instead of correcting.
Product designAn interface that holds together, carried by a design system your developers can keep alive without us.
Web developmentA fast web application that holds up over time, with the tests and delivery chain to match.
Mobile developmentAn iOS and Android app from a single codebase, published on both stores.
Infrastructure & securityInfrastructure described as code, and Zero Trust access that does not rest on a text message.
Maintenance & evolutionA product kept current, watched and fixed, with someone who answers when it breaks.
Agent-Native Architecture AdvisoryMake an existing product agent-operable without rewriting it — and without opening more than it should.

Go to

YorroProduct engineering studio in Abidjan and Paris. We design, we build, we ship.
ServicesBuild a product end to end, or advise a team on its agent-native architecture.
LabsWhat the studio has built: products, prototypes and research, with where each one actually stands.
TutorialsStep-by-step guides drawn from real projects, grouped into tracks by topic.
JournalThe studio's notes and positions.
ContactDescribe your project; you get a framing back, not a boilerplate quote.
AboutWho runs the studio, how it works, and what it turns down.
Discovery AgentDescribe your project in conversation; the agent ticks the modules and produces an indicative estimate.

↑↓move↵runescclose