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Cloud migration architecture roadmap with landing zone guardrails
Infrastructure + apps leadership • Enterprise IT • 6 weeks
Enabled safer migration with reference architectures, guardrails, and sequencing.
Snapshot
Services
- Enterprise Architecture
Deliverables
- Landing zone baseline requirements (high-level)
- Reference architectures (3 workload types)
- App segmentation + dependency tiers
- Migration roadmap (prioritized waves)
- Guardrails + review checklist
Context
- Engagement: 6-week cloud migration roadmap + reference architecture
- Timeline: 6 weeks
- Client: Infrastructure + apps leadership
- Industry: Enterprise IT
- Portfolio migration with varied workloads and dependency complexity
- Security baseline uncertainty created delays and exceptions late in delivery
- Needed repeatable patterns and a sequencing model to reduce program risk
Constraints
- Baseline controls had to be implementable without extended platform rebuilds
- Reference architectures needed to cover the most common workload types first
- Sequencing had to balance risk tiers with delivery capacity
Challenge
Cloud adoption was blocked by uncertainty: inconsistent patterns, unclear security baselines, and no sequencing for high-dependency systems.
How we worked
- Established a landing zone baseline (identity, network, logging, controls)
- Published reference architectures to reduce one-off design decisions
- Segmented applications by dependencies and risk to guide sequencing
- Built a wave-based roadmap aligned to capacity and risk tiers
What we did
- Defined landing zone baseline (identity, networking, logging, security controls)
- Created reference architectures for common workload types
- Built an application segmentation and sequencing model
- Produced a migration roadmap tied to delivery capacity and risk tiers
Outcomes
- Environment provisioning: ↓ from days to <2 hours (baseline in place)
- Migration lead time variance: ↓ ~30% (more predictable waves)
- Security baseline adherence: Established (standard controls)
Proof
- Landing zone baseline requirements (high-level) + review checklist
- Reference architectures (high-level) for common workload types
- Migration sequencing model based on dependency tiers
- Roadmap wave plan (prioritized migrations)
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