Moving legacy IT to a target architecture step by step
Data centres, networks, platforms and applications have grown over years. We develop a target state and move your landscape there in planned steps while operations continue.
Modernising a legacy IT landscape means capturing the current state and dependencies, defining a target architecture for data centre, network, cloud and operations, and dividing the path there into phases. FlixConsulting plans each phase with a rollback plan and has it accepted individually. This protects ongoing operations. At the end, your team runs the new environment itself.
Does this sound familiar?
If several points apply, a conversation is worthwhile.
- Every site, data centre and platform is built differently. Standards exist only on paper.
- Hardware and software are reaching end of life. Nobody can reliably assess the impact of replacing them.
- Changes take a long time because dependencies between systems are not documented.
- Your own data centre, your sites and the cloud follow different rules for network, security and operations.
- The modernisation has been approved. What is missing is a target state, a sequence and a reliable plan.
What happens if nothing happens
- Outages during cut-overs because dependencies only become visible in live operations.
- Security risks and rising effort from systems without vendor support.
- Investment in isolated solutions that later do not fit the target architecture.
- Dependence on a few people who still understand the environment as it has grown.
How we work
- 01
Capture the inventory and dependencies
We record sites, systems, networks, contracts and interfaces and assess their condition. The result is a picture that management and operations can both read.
- 02
Define the target architecture and roadmap
We design the target state for data centre, network, cloud and operations. Vendor comparisons and feasibility analyses make the decisions traceable.
- 03
Migrate in phases
We divide the migration into phases, each with a standard procedure, a rollback plan and acceptance. We manage risks phase by phase, not only at the end.
- 04
Embed standards in operations
We hand over operating concepts, documentation and monitoring and train the local teams. New sites and systems then follow the same rules.
What you have afterwards
- A documented target architecture with a roadmap, agreed with management, business units and operations.
- A phased migration plan with a rollback plan and acceptance criteria for each phase.
- Consistent standards for network, security and operations across all sites and environments.
- Operations teams that run the new environment themselves to fixed standards.
In practice
Hybrid target architecture for data centre, edge and cloud
Connect your own data centre, edge sites and cloud according to consistent rules: secure, operable and described as code.
Read use caseManaging network and firewall migration across many sites
Standardise firewalls and segmentation across many sites, in plannable phases with a rollback plan for each phase.
Read use case
Questions about this situation
Does a modernisation mean switching everything over at once?
No. We divide the migration into phases that can be tested and accepted individually. Each phase has a rollback plan. The sequence depends on risk, dependencies and your maintenance windows.
Do you have experience with large, distributed environments?
Yes. We bring experience from network migrations across many sites and from an international software rollout in more than 30 countries. What matters is a standard procedure for each site and clear rules for the local teams.
How do you decide between data centre and cloud?
Workload by workload, based on compliance, data, latency, availability, operational expertise and cost. We check compliance and protection requirements first, because they rule out options. We record the assessment and the reasoning in writing, so it remains clear why each system runs where it does.
Let us talk about your project.
No obligation, confidential and with a concrete next step.