IT resilience describes whether a company stays able to act through disruption: a cloud outage, changed contract terms, an interface failure, or staff turnover at the IT provider.

For mid-sized companies, this is rarely about total independence from external providers. What matters is whether critical processes keep running or can be restored quickly.

Practical building blocks:

• Transparency: Which systems are business-critical? ERP, finance, production, document management?
• Data portability: Know the export paths and test them regularly.
• Backup and disaster recovery: Documented not only by the provider, but verified internally.
• Exit options: An exit strategy before you need one, not after.

The ERP sits at the center of many mid-sized companies. Orders, inventory and finances all depend on it. Resilience for the ERP means keeping operations, support and hosting switchable (cloud vs. on-premise is only part of that question).

Resilience and digital sovereignty overlap: sovereignty aims at deliberate decisions, resilience at continuity when something breaks. Both require documentation and regular review, not a permanent, large-scale project.