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Target architecture for platform modernization
Product + engineering org • B2B SaaS • 4 weeks
Aligned teams on a runnable target architecture and a phased modernization plan.
Snapshot
Services
- Enterprise Architecture
Deliverables
- Current-state dependency map + risk hotspots
- Target architecture blueprint + reference patterns
- Domain boundaries + interface guidelines
- 90-day transition roadmap with sequencing
- ADR template + decision log starter set
Context
- Engagement: 4-week architecture sprint
- Timeline: 4 weeks
- Client: Product + engineering org
- Industry: B2B SaaS
- Modernization in-flight across multiple teams with shared dependencies
- Risk concentrated at domain boundaries and integration hotspots
- Success required a runnable plan that did not pause delivery
Constraints
- Guardrails had to be lightweight enough for weekly use
- Patterns needed to work with existing systems and release cadence
- Sequencing had to reflect real delivery capacity, not ideal-state diagrams
Challenge
Multiple teams were modernizing in parallel without shared guardrails, creating architectural drift, duplicated solutions, and rising integration risk.
How we worked
- Mapped the current state to expose hotspots and coupling early
- Codified a small set of non-negotiables and reference patterns
- Aligned sequencing to capacity using a pragmatic 0–30 / 30–60 / 60–90 plan
- Installed a minimal ADR + review cadence to keep decisions durable
What we did
- Mapped current-state domains, dependencies, and hotspots driving delivery risk
- Defined target architecture principles, reference patterns, and non-negotiable guardrails
- Designed a phased transition plan (0–30 / 30–60 / 60–90) aligned to delivery capacity
- Established an architecture decision log (ADR) and lightweight review cadence
Outcomes
- Decision cycle time: ↓ ~35% (weeks → days)
- Rework from architectural drift: ↓ ~20% in first 60 days
- Team alignment: Established (shared guardrails)
Proof
- Target architecture blueprint (high-level) with boundary principles
- Reference patterns for service boundaries and integration contracts
- 90-day sequencing roadmap tied to risk tiers and capacity
- ADR template + decision log starter set (redaction-safe)
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