Theme

Critical Infrastructure

Data centers, networks, cables and satellites: the physical system everything rests on.

3 texts

Critical InfrastructureSeptember 6, 2026Explainer

Low, medium and geostationary orbit: what changed, and why GEO didn't die

In 2026 there are more than 11,000 Starlink satellites in orbit and no inhabited region left without possible coverage. Brazil is buying a geostationary satellite anyway. That is not a contradiction: the three altitudes solve different problems.

Critical InfrastructureSeptember 5, 2026Explainer

Tier IV: what it really means, and why it matters for critical infrastructure

Is a Tier IV data center just a data center with a lot of redundancy? No. And perhaps the best way to understand the difference is to start with energy.

Critical InfrastructureSeptember 5, 2026Note

Space is critical infrastructure: what a webinar on national autonomy says to those who sign off on risk

I took part in the 6th Espaço em Pauta webinar, run by Brazil's Institutional Security Cabinet, on space as an element of national strategic autonomy, representing Telebras. The lens of the Brazilian Defense College helps explain why this is a matter for senior management, not only for engineering.