Everything to make the case.

Warum CASB allein nicht genügt

CASB braucht vollständigen Web-Schutz drumherum. Warum, steht hier.

ZTNA vs. VPN: Access Security for a Cloud-First World

Why identity-based access replaces the VPN, and how to get there without breaking daily work.

ZTNA vs. VPN: Zugriffssicherheit für eine Cloud-First-Welt

Warum identitätsbasierter Zugriff das VPN ablöst - ohne den Arbeitsalltag zu brechen.

Secure Access Done Right

How SSE and ZTNA work together on the way to a zero-trust setup.

The 3-Layer Email Security Model for 2026

A layered model against phishing, spoofing and account takeover.

Sicherer Zugriff - neu gedacht

Wie SSE und ZTNA auf dem Weg zu Zero Trust zusammenspielen.

Financial Services

A global financial firm moved to ZTNA and cloud proxies: secure access worldwide, minimal IT effort.

Marquardt

Mechatronics group, 21 locations, 10,000 people: the network run as a service.

Mobile Connectivity Kit (Satellite Based)

Connectivity beyond terrestrial lines: satellite-based, managed like any other site.

SASE: 7 Wege, wie Ihr Unternehmen profitiert

Sieben Geschäftsergebnisse konvergenter Netz- und Sicherheitsdienste.

Global Connectivity Services - Service Brief

Backbone, last mile and line operations in one managed service.

Franke

Legacy remote access replaced with managed ZTNA and MEP: secure access worldwide, less complexity.

What SD-WAN Can't Do, But SASE Can

Where connectivity alone stops and converged security begins.

Wo SD-WAN aufhört, und wo SASE weitergeht

Wo Konnektivität allein endet und konvergente Sicherheit beginnt.

Zero-Trust-Sicherheitsmodelle: Grundlagen, Praxis, Compliance

Das deutsche Zero-Trust-eBook: Konzepte, Einführung, Regulatorik.

ZTNA erfolgreich einführen: 4 Phasen für Unternehmen

Heise-Webinar mit Open Systems: der Einführungsfahrplan.

ZTNA-Grundprinzipien erklärt: Zero Trust mit Open Systems

Heise-Webinar mit Open Systems: die Grundlagen.

ZTNA statt VPN: Die wichtigsten Treiber für Zero Trust

Heise-Webinar mit Open Systems: warum Unternehmen wechseln.

Future-Proof Your Global Network: 4 Moves to Optimize Connectivity

Four moves that take cost and fragility out of global connectivity.

Kelvion

SD-WAN across 90 locations in six months, operated by a two-person IT team.

Checklist EN

Global Network Optimization: Enterprise IT Checklist

A working checklist for auditing latency, cost and resilience across regions.

A Primer for Securing Modern OT Environments

Where OT differs from IT security, and how to segment without stopping production.

Cybersecurity in Europe 2025: What CIOs/CISOs Really Want

Survey results from European IT leaders, on one page.

Infographic DE

Cybersecurity in Europa 2025: Was CIOs/CISOs wirklich wollen

Umfrageergebnisse europäischer IT-Verantwortlicher, auf einer Seite.

Email Security - Service Brief

The layered email defense as a managed service: filtering, authentication, response.

Solution/Product Brief DE

Email Security - Service Brief

Die mehrschichtige E-Mail-Abwehr als Managed Service.

Webinar: Zero Trust in der Praxis

techconsult-Webinar mit Open Systems, als Aufzeichnung.

Watch webinar →

Boost Email Security Efficiency

Where email defenses leak time and ROI, and how to close the gaps.

ZTNA - Product Brief

The ZTNA service on paper: scope, architecture, operations.

Solution/Product Brief DE

ZTNA - Product Brief

Der ZTNA-Dienst auf Papier: Umfang, Architektur, Betrieb.

What to Consider in Your OT Security Provider Choice

The questions that separate real OT coverage from rebadged IT security.

SASE: 7 Ways Your Business Benefits

Seven business outcomes of converging network and security.

SSE Explained

What Security Service Edge is, and which components make it up. Three minutes.

SD-WAN Explained

How SD-WAN routes traffic by application policy. In plain terms.

Transform Your Network & Security Strategy with Managed SASE

IDC InfoBites: why enterprises hand SASE operations to a managed service.

Navigating 2025 - Top 6 SASE Trends

The six shifts shaping SASE decisions in 2025.

Navigating the Compliance Labyrinth

NIS2, DORA and friends: what network and security teams actually have to deliver.

Wegweiser durch das Labyrinth der Vorschriften

NIS2, DORA und Co.: was Netz- und Sicherheitsteams liefern müssen.

Optimize Your Network Business Case

TeleGeography data on network cost drivers, on one page.

Building a Network Business Case: Essential Data Insights for CIOs

The numbers a CIO needs to argue a network transformation.

4 Smart Ways to Maximize Application Performance and Availability

Caching, compression and protocol tuning: where each one pays off.

The Future of U.S. IT Infrastructure

Survey findings from U.S. IT leaders, on one page.

SASE Experience

The service experience behind the platform, in two minutes.

2025 IT Budgets on the Rise

German IT infrastructure report: budgets are rising. Where they go.

Infographic DE

Deutscher IT-Infrastruktur-Report: Steigende IT-Budgets 2025

Kernzahlen des deutschen Reports, auf einer Seite.

The 6 SD-WAN Evaluation Factors

A buyer's shortlist: the six factors that decide an SD-WAN choice.

Report EN

2025 U.S. IT Infrastructure Report

The full U.S. survey report behind the infographic.

7 Considerations to Selecting an SD-WAN Backbone Provider

What to weigh before committing global traffic to a backbone.

Report DE

Deutscher IT-Infrastruktur-Report

Der vollständige deutsche Marktreport hinter der Infografik.

Schlüsselfaktoren bei der Auswahl eines SD-WAN-Backbone-Providers

Was zu prüfen ist, bevor globaler Verkehr auf ein Backbone geht.

Global Backbone Connectivity - Product Brief

PoPs, SLAs and China-ready routes: the backbone on paper.

Replace MPLS with SASE

The migration play for retiring MPLS circuits without disruption.

Solution/Product Brief DE

MPLS mit SASE ersetzen

Der Migrationspfad weg von MPLS-Leitungen, ohne Betriebsunterbruch.

Leaving Complexity Behind: Open Systems SASE Experience

The case for running SASE as one service instead of a stack of tools.

SASE Experience - Solution Brief

Platform, operations and service model in one document.

Manufacturing - Solution Brief

Secure plants, OT and remote sites on one platform.

Application Optimization: TCP Optimization

How TCP tuning lifts CIFS and HTTP performance.

Application Optimization: Protocol Optimization

Cutting chatty protocols down to size.

Application Optimization: Improving Performance in SD-WAN

What application optimization adds on top of SD-WAN.

Application Optimization: Functionalities

The optimization toolbox at a glance.

Application Optimization: Caching and Block-Level Deduplication

Why repeated transfers stop hurting.

Application Optimization: Lossless Compression

More throughput from the same line.

CLAAS

3,650 secure remote connections across 165 locations, stood up in seven days.

GEA

MPLS replaced with SD-WAN and centralized security: better visibility and cloud performance.

Chemours

A global chemistry company's network, secured and simplified.

Open Systems Managed SASE

The service in three minutes: cloud as the network, security at the edge.

SASE Myths: Five Things You Thought You Knew - Debunked

Five common SASE claims, checked against reality.

SASE-Mythen: Fünf Trugschlüsse entlarvt

Fünf gängige SASE-Behauptungen im Realitätscheck.

From Silos to Synergy: How ZTNA Thrives within SASE

Why ZTNA works best as part of a converged platform.

Von Silos zu Synergien: Wie ZTNA innerhalb von SASE wirkt

Warum ZTNA als Teil einer konvergenten Plattform am besten wirkt.

VPN vs. SSO vs. ZTNA - What Is Future-Built Access Control

Three access models compared, and which one scales.

VPN vs. SSO vs. ZTNA - Was ist zukunftsfähige Zugriffskontrolle?

Drei Zugriffsmodelle im Vergleich - und welches skaliert.

ZTNA in 3 Minutes: A Quick Guide to Zero Trust Network Access

The fastest useful answer to "what is ZTNA?"

3 Minuten ZTNA: Eine Kurzanleitung zu Zero Trust Network Access

Die schnellste brauchbare Antwort auf die Frage, was ZTNA ist.

SOS Children's Villages

A global NGO's network, run reliably in places where reliability is hard.

KEMET Q&A Session

KEMET's IT leadership on running SASE in production.

Power Your Healthcare Organization with Managed SASE

Connectivity and security for clinical environments.

Protect Your Remote Workforce

Remote access without the VPN pain.

Open Systems Managed Services

What "managed" means here: engineers on the service, not tickets in a queue.

Inside Look into Open Systems

People and platform behind the service.

Non-Governmental Organizations - Solution Brief

Field connectivity and security for NGOs, without field IT.

Higher Education - Solution Brief

Open campus networks, protected without slowing research and teaching.

College of Southern Nevada

48,000 users on a secure cloud strategy, at college budgets.

Mikron

Fewer false positives, sharper focus on protecting production.

KEMET Q&A: SASE ROI - More than Savings from MPLS

Where the ROI actually came from.

CSN: Why You Should Get Out of the Security Business

CSN's case for handing security operations to a service.

Secure Remote Access - Solution Brief

The remote-access service on paper.

KEMET Case Study (Open Systems & Equinix Joint Solution)

The joint Equinix build behind KEMET's network, as a PDF case study.

Der Spiegel

Germany's news magazine on working with Open Systems.

Vitra

The furniture maker on its managed network.

Gategroup

Airline catering at global scale, connected.

CLAAS Customer Video

CLAAS on the switch, on camera (EN/DE).

Altana

60+ locations connected; acquisitions integrated securely.

12 Essential Steps for Migrating to SD-WAN

The migration playbook, step by step (eBook).

5 Key Mistakes Organizations Make with SD-WAN Security

The classic security gaps in SD-WAN projects, and the fixes.

KEMET

Hybrid cloud and on-prem run as one network; operations cost cut by 50%.

Securely Accelerate Your Insurance Operations

Network and security for insurers, as a brief.

Financial Services Firms Must Focus on Network Defenses

Why network defense is the regulator-proof layer for finance.

Mammut

The outdoor brand's aging WAN replaced; IT freed for strategy.

Why CASB Alone Isn't Enough

CASB needs full web protection around it. Here is why.

Secure SD-WAN: Helping CIOs Meet Their Goals

The CIO case for building security into the WAN.

SD-WAN: Why We Should Learn from the Titanic

Resilience lessons for global WAN design.