Est. 2026, Reykjavík

iceland

kastro.is

Infrastructure, continuity, and websites that stay explainable.

Iceland · Helsinki · Germany · Luxembourg

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WHY KASTRO

not another vendor pitch.

Kastro is useful when you need an independent technical buyer on your side, not another supplier trying to expand its footprint.

STARTING POINT

Cost before ideology.

Sovereignty matters, but the first conversation is usually simpler: what are you paying for, what can you stop paying for, and where are you trapped?

METHOD

Keep what works.

Not every Microsoft tenant, cloud server, or MSP contract is bad. We separate useful systems from expensive inertia before recommending change.

POSITION

Independent, pragmatic, European.

Kastro prefers open-source and EU/EEA-sovereign options, but only when they solve a business problem better than the incumbent. Led by a certified ISO Lead Auditor, we build frameworks that satisfy boards and empower engineers.

OUTCOME

Fewer bills. Fewer traps. Better resilience.

The goal is a stack your business understands, can afford, can recover, and can change without asking one vendor for permission.

Independent Review
SMB Focus
Cost First
Security Aware
EU/EEA Options
No Vendor Agenda

Built on the European open-source stack

ProxmoxVirtualization
HetznerInfrastructure
CoolifyApp Platform
WazuhSIEM/XDR
NextcloudCollaboration
ZabbixMonitoring
GrafanaDashboards
TheHiveIR Case Management
OpenTofuIaC
Bunny.netEdge / CDN
CONTACT

ready to build calmer technology?

Talk to Kastro about infrastructure, security and continuity, managed websites, hosting, domain/email trust, recovery readiness, or a focused digital product.

Start with the smallest useful scope: a review, a website, a hosting move, a recovery check, or a practical implementation plan with clear boundaries.

Email hello@kastro.is

HQ Reykjavík, Iceland

keep what works. cut what traps you.