In plain English — no jargon. This is exactly what stands between your client data and the outside world.
Administrative access (SSH/RDP) is reachable only over a private encrypted mesh (Tailscale). There is no public admin door to attack.
Every site is HTTPS-only with HSTS and a modern TLS configuration. Browsers refuse to connect any other way.
Single sign-on through Authentik with MFA, so a stolen password alone is not enough to get in.
A shared security-headers tier (CSP, X-Frame, X-Content-Type) and per-route rate limits guard every site against common attacks.
Mail is signed with DKIM and protected by SPF + DMARC, so your messages land in inboxes and can't be easily spoofed.
The entire configuration is version-controlled with plain-English runbooks. No lock-in — a clean "you own it" handoff any time.