The Guide to Tech DD · Last reviewed 20 May 2026
The practitioner's guide to tech due diligence and the modern data room.
Shared by the team at Beyond M&A
Drawn from 150+ Tech DD engagements across PE, corp dev and sell-side. 134+ guides.
Start here
By what you're trying to do.
PE diligence lead
Private Equity
Sponsor-grade Tech DD scoped for the value-creation plan, not the IT audit.
Open the path →
Corp dev / strategic
Corporate Development
Run integration as a deal workstream from LOI — not a Day-1 surprise.
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Sell-side prep
Operators & Founders
What buyers will find in your stack before you pick a banker — and how to triage it.
Open the path →
Flagship framework · 14 min read
The Tech DD Red-Flag Framework
Twelve patterns that have killed or repriced deals in our last 50 engagements. Severity scoring, the questions that surface them, and the workarounds buyers actually accept.
Read the frameworkThe twelve patterns
- Stack divergence
- Single-engineer keys
- Dark backlog
- Vendor lock-in
- AI cost cliff
- OSS license drift
- Phantom uptime
- Customer-config sprawl
- Security debt
- Roadmap theatre
- Data-architecture rot
- Founder bus-factor
Contrarian take
Why "AI-powered Q&A" is the wrong question
Most VDR AI demos are the same parlour trick. The real question is what happens on the 30% of answers the model gets confidently wrong — and whose name is on the IC memo when it does.
Read the argument →
Comparison matrix
The 2026 VDR shortlist
Twelve vendors scored on the same rubric IC committees actually care about.
| Vendor | Strength | Watch-out |
|---|---|---|
| Datasite | Enterprise IB workflow | AI bolt-on, expensive |
| iDeals | Mid-market UX | Audit trail depth |
| Intralinks | Cross-border compliance | Dated interface |
| Lens | AI-native, traceable Q&A | Newer category entrant |
All pillars
33 guides
Tech Due Diligence
Buy-side playbooks for technical workstreams.
31 guides
Data Rooms
Vendor comparisons, setup guides, and the AI-native shift.
30 guides
AI in DD
How AI is reshaping the deal-team workflow.
8 guides
Deal Process
LOI to close — mechanics, terms, and discipline.
8 guides
Post-Merger Integration
Day 1, 100 days, and synergy realisation.
8 guides
Sell-Side Prep
Readiness, narrative, and process design.
8 guides
Valuation & Modelling
Multiples, models, and the assumptions IC committees challenge.
8 guides
Legal & Regulatory DD
Antitrust, data, IP, and cross-border filing regimes.
Latest entries
tech due diligence · 14 min
The SaaS Tech Due Diligence Checklist
The 47-point technical diligence checklist VCs and corp dev teams use on SaaS targets. Architecture, security, AI exposure, key-person risk, scoring rubric.
tech due diligence · 11 min
Tech Due Diligence on an AI Startup
How to run technical diligence on an AI-first startup. Training data, model moat, inference economics, vendor lock-in, and the questions the seller will dodge.
tech due diligence · 9 min
Tech Due Diligence Red Flags
Twelve technical diligence red flags that consistently predict repricings, walked deals, and post-close write-downs in SaaS and AI acquisitions.
data rooms · 8 min
What Is a Virtual Data Room?
A virtual data room is the secure workspace where deal documents are shared with bidders. How VDRs work, what they cost, and how AI is changing the category.
data rooms · 9 min
How to Evaluate a Virtual Data Room
A vendor-neutral framework for selecting a virtual data room: the criteria that matter, the questions to ask in a demo, and how the category has shifted with AI.
data rooms · 8 min
Enterprise vs Mid-Market Virtual Data Rooms
Enterprise and mid-market VDRs are priced and built for different deals. A vendor-neutral comparison of where each tier wins, and how to size the room to the transaction.
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