Sustainability
Hosting uses energy. Every page, every query, every deploy. We can't change that. What we can do is be honest about it, and make a -small- difference with the right choices.
Infrastructure
100% green energy
Our hardware runs on green electricity, generated by wind and solar energy. Not offset through certificates from abroad - the power is generated and consumed here.
All our data centres in the Netherlands run on 100% Dutch wind and solar energy. This isn't compensated through certificates from abroad - the electricity is generated and consumed domestically.
30% less hardware, 50% less power
The typical server setup is active-passive: one location handles all the traffic while a second location does nothing and maybe acts as a failover once every five years - so 100% overcapacity at all times.
Our architecture is active-active: every location actively serves traffic, so we can get away with around 30% overcapacity to absorb a full outage rather than 100%. Plus, no hardware sits idle.
The result: roughly 30% less hardware and 50% less power consumption.
The typical hosting setup is active-passive: one location handles all traffic while a second sits idle as a failover copy. That means 100% overcapacity at all times. We use a multi-location active-active architecture instead. Every location actively serves traffic, so we only need roughly 30% overcapacity across all locations to handle a full site failure - rather than 100%. The result: 30% less hardware and approximately 50% less power consumption for an even higher level of redundancy.
How we work
An eye for humanity
Just as we give our customers a solid (digital) foundation, we give our people a solid base too: fair salaries, real flexibility, and investment in the growth of every team member. And yes, everyone says that - we actually do it. We expect a lot of our people (we have to: we host critical infrastructure), but you won't find an Elon Musk walking around here.
We pay fair salaries, offer real flexibility, and invest in the growth of every team member. We don't count keystrokes or measure people by lines of code. Burnout is a sustainability problem too - and we take it seriously. Our retention rate reflects this: people stay because they want to, not because they have to.
Daily choices
How we get places
Wherever possible, our team travels by bike or public transport. We reimburse cycling costs and public-transport passes. We don't offer a lease-car programme. Our office is near Eindhoven station, so it's easy to reach by train.
We reimburse bicycle costs and public transport subscriptions. We don't offer a lease car programme. Our office is located near Eindhoven central station, making it easy to reach by train. For the few trips that require a car, we encourage carpooling. If a train gets us there, we take the train.
Vegetarian by default
At the office, we eat vegetarian - and often vegan. It's the simplest daily choice with the clearest impact: the food industry is one of the largest contributors to emissions.
All lunches and catered events at the office are vegetarian. We made this a deliberate choice because the food industry is one of the largest contributors to emissions. When plant-based eating is the norm rather than the exception, the impact adds up quickly.
How we do business
European values
Digital independence is sustainability too: European values, European data centres, a European team. We've spoken out about digital sovereignty since we started in 2014.
We choose European software. Customer data never leaves European soil. We're vocal about digital sovereignty because relying on non-European cloud providers creates dependencies that are difficult to reverse - and that has long-term consequences for the European tech ecosystem.
Engaged in society
We think carefully about the impact of technology on society. We were among the first to support the referendum against the Dutch intelligence services surveillance law (the 'sleepwet'), and we think critically about AI in our own work.
In 2017 we actively supported the campaign for the referendum on the Intelligence and Security Services Act (the "sleepwet"). We continue to engage with digital rights topics - including the societal impact of AI, which we approach critically rather than adopting it blindly.
Giving back
Open source contributions
We regularly donate to open-source projects and advocacy organisations, including Bits of Freedom, Borg, Pydantic and Celery. Everyone should be investing in the ecosystem that keeps the internet running.
We also publish our own open-source projects and contribute upstream fixes when we find bugs.
We financially support projects that our platform depends on - not as a marketing exercise, but because maintainers deserve compensation for the work the entire industry relies on. We also publish our own open-source packages and contribute upstream fixes when we find bugs. Bits of Freedom receives our support because digital rights advocacy protects the internet we all build on.
A clean internet
We respond to abuse reports faster than the average. Malware, phishing, spam - if it's on our network, we act. The industry average is three days; we don't need three days.
According to independent research by abuse.ch, Cyberfusion had the fastest response time in the Netherlands.
Independent research by abuse.ch measured the response times of hosting providers to abuse reports. Cyberfusion had the fastest response time of the Netherlands. We actively monitor for malware, phishing, and other abuse - and act immediately when something is reported.
Transparency
Honest storytelling
We skip the greenwashing. Slapping a "sustainable" badge on your website is easy. Actually explaining what you do, why, and where you fall short - that takes more effort. We take that effort, as this page itself shows.
This page itself is an example. We could have put up a badge and called it a day. Instead, we list what we actually do, explain why, and let you draw your own conclusions. We have an ISO 27001 certification, but we will never claim that a certificate alone makes you secure. Context matters more than easy labels.
