IaaS, PaaS, SaaS in practice
Public cloud, private stacks and SaaS coexist. Choices depend on elasticity needs, data residency and team controls.
We help design landing zones, billing guardrails and naming so future teams do not drown in sprawl.
Tagging, ownership tags and chargeback models should be agreed before the tenth subscription—otherwise cost reviews become archaeology.
Assessments, waves, cutovers
Inventory and business cases precede waves with rollback paths and visible tests for business owners.
Our cloud migration service covers lift-and-shift through replatforming, including hybrid paths.
Hybrid and legacy coupling
Many estates stay hybrid for regulatory or technical reasons. VPNs, dedicated links and API facades bridge without permanent tight coupling.
Legacy modernization can proceed in parallel with cloud-native channels.
Operations and support
Everyday reliability needs patching, backups, alerts and incidents. IT support and managed services can carry load with clear SLAs.
Performance and scaling are handled jointly with application teams.
Baselines and compliance
Identity is the perimeter: MFA, conditional access, least privilege. Logging depth matches risk class alongside your security strategy.
Cost transparency
Waste shows up as idle resources, egress surprises and missing tags. Budget alerts, rightsizing and reservations are baked in early.
Our cloud migration calculator supports initial sizing; projects deepen scenarios.
Quarterly architecture reviews keep spend aligned with growth instead of reacting only when invoices spike.
Backups, disaster recovery and drills
Elastic infrastructure still needs explicit RTO/RPO targets per workload. We map business processes to recovery sequences and highlight hidden dependencies—licensing, DNS, secrets—that block a clean failover.
Backups alone are not DR: restores must be rehearsed with the same automation you expect during an incident. Hybrid estates need clear hand-offs between cloud providers, on-prem teams and application owners.
Tabletop and technical exercises keep runbooks honest. Pair this pillar with our IT support, managed services and security offerings when you want operational cover beyond migration day.
Sources
Digitalisation and cloud/IT adoption figures for Germany are aligned with Bitkom publications (e.g. economic situation of the IT industry, Cloud Monitor, 2024/2025 editions as applicable) plus common market context. Technical guidance on architecture, cost and operations reflects Groenewold IT project experience.
Frequently asked questions
Hybrid vs full cloud?
How do you prevent runaway cloud spend?
What belongs in a secure landing zone?
Can you align Microsoft 365 with Azure estates?
Deep dives & related pages
The links below connect services, solutions and topic articles as a structured entry point.
- Cloud migration
- Managed IT services
- IT support
- System integration
- Solution: Performance & scaling
- IT security
- Legacy modernization