Things go wrong: an outage at a cloud provider triggers a chain reaction that knocks out countless online services worldwide. A faulty configuration change disrupts SaaS platforms. Technical problems in domain management make millions of websites unreachable for hours. Internet outages like these have significant consequences for businesses, bringing digital operations to a halt within a short time.
Cybersecurity alone doesn't keep operations running
A Bitkom survey shows the scale of the dependency: on average, the companies surveyed can only keep working for 20 hours without internet access, and 21 percent would have to stop working immediately. Many companies focus primarily on IT security, investing in firewalls, access controls, attack detection, and data backups. But that doesn't automatically add up to a resilient digital infrastructure, since a company can become unable to operate without internet access even with solid cybersecurity in place.
The most critical dependencies are the ones that barely register in everyday operations, such as authentication services, network connections to branch offices or machinery, and external interfaces to service providers and the supply chain. A backup alone doesn't keep applications reachable or processes running.
Geo-redundancy builds resilience against outages
Real resilience requires the right IT architecture. Companies need to determine which business processes must keep running under all circumstances, and for each critical application, define what downtime and data loss is acceptable. Only then can you decide which systems need to be highly available and where a delayed restart is good enough.
The foundation for that is a geo-redundant cloud architecture: critical systems and data don't sit in a single failure domain but are spread across separate locations or regions. If two systems share the same building, the same power connection, or the same network link, the protection is limited. True geo-redundancy needs separate data centers and alternative connection paths. That, however, only lays the foundation. Real resilience only comes from an automatic switch to a backup system. This planned failover prevents a scramble for solutions under time pressure during a crisis; the entire IT infrastructure must detect outages on its own through monitoring tools and switch over according to fixed rules.
Recovery needs testing and clear procedures
Once the disruption is over, it's time for a controlled recovery, since high availability doesn't replace a recovery strategy. The mirrored environment is transferred back to the original systems in a controlled way. This procedure should be tested and reviewed regularly, covering the entire business process including all interfaces to service providers and business partners. Many disaster recovery plans fail because of one small dependency overlooked during planning.
After a cyberattack or a faulty data change, switching back to the original environment immediately is also off the table, since the mirrored environment may contain the same damage as the original system. That's why you need verified recovery paths and restore tests that show how long it actually takes to return to a safe operating state. An untested disaster recovery plan ultimately just says: it'll probably be fine.
Digital sovereignty creates room to maneuver
Closely tied to resilience is digital sovereignty. A company stays able to act in a crisis only if it retains control over its data and applications. That doesn't necessarily mean total independence from external providers, but rather a genuine choice and the ability to use alternatives, both technically and organizationally. Too tight a dependency on a provider's proprietary features prevents a quick failover.
Resilience, then, isn't a nice-to-have layer on top of digitalization that only becomes relevant after a major incident. Every digital infrastructure needs an architecture that anticipates disruptions, switches quickly to backup environments, and then recovers in a controlled way. Only with that capability does the business keep running even under difficult conditions.