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AssessmentTechnical Due Diligence
- Codebase quality & architecture debt review
- Vendor lock-in exposure analysis
- Team capability gap assessment
- Investor- and acquirer-grade reporting
- Risk register with prioritized findings
IT Advisory & Enterprise Architecture
Architecture decisions that outlast the roadmap.
CTO-level technical guidance for founders and executives who need their technology stack to be an asset — not a liability — at every stage of growth.
01Technical Due Diligence
Know what you have before you decide what’s next.
Codebase quality, architecture debt, vendor lock-in and team capability gaps — assessed with the same rigor an acquirer would apply, before any recommendation is made.
02Legacy Modernization
Phased. Risk-managed. No big-bang rewrites.
A migration path from monolith to modern that moves incrementally — the business keeps running while the architecture catches up.
03Enterprise Architecture
Every system decision, traced to a business goal.
Technology stack mapped to where the business is heading — build vs. buy calls, integration strategy, and scalability designed for the next stage, not just this one.
Technical Due DiligenceLegacy ModernizationEnterprise Architecture
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01Why a specialistSenior judgement, before the spend —
Senior judgement, before the spend —
not a vendor pitch in disguise.
Most technology decisions at this level aren’t made by people who have to live with the consequences. A vendor pitches what they sell. An internal team defends what they already built. Neither is positioned to give you the unvarnished read.
We come to the table with no product to sell and no legacy decision to defend — just a clear-eyed assessment of what exists, what it’s worth, and what it will cost to get where you’re going.
The right architecture decision made early is invisible. The wrong one is a multi-year tax on every feature that follows.
02The disciplineFour disciplines.
Four disciplines.
One complete advisory process.
Diligence, migration, architecture and ongoing governance — wired together from the first assessment, not stitched on afterward.
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MigrationLegacy Modernization
- Strangler-fig migration strategy
- Phased, risk-sequenced roadmap
- No big-bang rewrites
- Business continuity throughout migration
- Incremental monolith-to-modern path
⬡
DesignEnterprise Architecture
- Technology stack mapped to business goals
- Build vs. buy decisions with TCO modelling
- Integration & domain boundary strategy
- Long-term scalability design
- Vendor-neutral recommendations
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GovernanceOngoing CTO Advisory
- Fractional CTO engagement
- Architecture review cadence
- Technical roadmap governance
- Hiring & vendor selection guidance
- Retainer-based strategic consulting
03The standards
The frameworks we assess against.
Cloud platforms, governance frameworks and risk models — the same standards an acquirer or auditor would apply.
AWS
Google Cloud
KubernetesS2 SOC 2T TOGAFCM Cost ModellingTM Threat ModellingR Roadmapping7+
Yrs avg. senior engineering experience
20+
Products delivered
99.9%
Uptime standard
C-suite
Level we engage at
04The system
Advisory Engagement — governed like a real program.
One unified view of diligence findings, migration milestones and review cadence. Owned & engineered by Zerobyte.
The advisory edge
Vendor-Neutral by Design
No product to sell means every recommendation is judged on merit, not margin.
Acquirer-Grade Diligence
The same rigor an investor or acquirer would apply — before you commit to a direction.
Incremental, Never Big-Bang
Strangler-fig modernization keeps the business running while the architecture catches up.
Board-Ready Communication
Findings distilled into an executive read-out — clear, defensible, and free of jargon.
TCO-Modelled Build vs. Buy
Every build-vs-buy call backed by real total-cost-of-ownership modelling, not gut feel.
Governance That Persists
Architecture review cadence and roadmap governance that outlasts the initial engagement.
Ongoing CTO advisory ties directly into our Retainer-Based Strategic Consulting engagement model — the same one growing businesses use for continuous architecture guidance, not a one-time report.
05How it worksA lifecycle,
A lifecycle,
not a one-time report.
Every engagement runs the same proven loop — from scoping to ongoing retainer — so guidance stays current as the roadmap shifts.
01Scoping Call
The decision at stake — investment, modernization or scale — defined alongside the questions that must be answered.
02Assessment
Codebase, infrastructure, security and team reviewed through structured interviews and artefact analysis.
03Synthesis
Findings distilled into a risk register, target-state architecture and prioritized recommendations.
04Read-out
An executive presentation with clear, defensible guidance — and the trade-offs behind every call.
05Advisory Retainer
Ongoing guidance as the plan executes — architecture governance, hiring input and recurring audits.
06How you engage us
Flexible engagement models — advisory usually means retainer.
The same three models available across every discipline. Advisory most commonly enters as Retainer-Based Strategic Consulting.
Team
Dedicated Team Augmentation
- Senior engineers integrated into your workflow
- Embedded in your tools & standups
- Best for hands-on execution alongside your team
- Scales up or down with the engagement
Fixed
Fixed-Scope Project Delivery
- End-to-end management, discovery to deployment
- Best for clearly defined diligence or migration scope
- Fixed timeline, fixed deliverables
- Board-ready output on a set schedule
Retainer
Retainer-Based Strategic Consulting
- Ongoing technical guidance & architecture audits
- Most common model for advisory engagements
- Fractional CTO presence for growing businesses
- Review cadence set to your governance rhythm
Advisory most commonly enters as a retainer — ongoing judgement, not a one-time report that goes stale the moment the roadmap shifts.
07Domain depth
We speak the boardroom fluently.
If these words run your governance process, you're in the right place.
Technical Due DiligenceArchitecture DebtVendor Lock-InStrangler-Fig MigrationTarget-State ArchitectureDomain BoundariesIntegration StrategyBuild vs. BuyTCO ModellingFractional CTOArchitecture GovernanceRisk RegisterCloud Cost RationalizationSecurity Posture AuditCompliance Gap RemediationTOGAFSOC 2 ReadinessThreat ModellingRoadmap GovernanceBoard-Ready ReportingInvestor-Grade AssessmentTeam Capability ReviewScalability DesignModernization Sequencing
08Our commitment
Backed by a real promise.
12-Hour Response
Raise any query and our team responds within 12 hours — guaranteed, every time.
Zero-Minute Grievance
Critical grievances are addressed immediately — no ticket queues, no waiting.
SLA-Backed Uptime
99.9% uptime standard across everything we build or advise on.
Vendor-Neutral, Always
No product to sell — every recommendation is judged on merit alone.
09Engagement proof
Results, not portfolios.
Two shapes of engagement we run often — the specifics change, the standard of judgement does not.
Series B Diligence Review
48-hour read-out
codebase · infra · team assessment
- ✓Full technical due diligence ahead of a funding round
- ✓Codebase, infrastructure and team capability review
- ✓Risk register delivered to the investor timeline
- ✓Board-ready executive summary
Featured result
Monolith Modernization Program
Zero big-bang rewrites
phased roadmap · retainer governance
- ✓Strangler-fig migration roadmap, sequenced by risk
- ✓Business kept running throughout the migration
- ✓Ongoing architecture review cadence via retainer
- ✓Fractional CTO governance through execution
Let's talk architecture
Ready for a clear-eyed read on your stack?
No pitch, no product to sell — just senior judgement. Start with a 30-minute architecture review and we'll tell you exactly what we'd look at first.