📅 July 2026⏳ 14 min read🔍 Investors, PE, VC, Corp Dev
70%
Of deals surface tech issues in DD
2–6 wks
Traditional timeline
What Is Technology Due Diligence?
Technology due diligence is the systematic evaluation of a target company's entire technology ecosystem — software, infrastructure, intellectual property, security posture, and engineering capabilities — as part of an investment, merger, or acquisition decision.
While financial due diligence asks "Is this company making money?" and legal due diligence asks "Is this company exposed to lawsuits?", technology due diligence asks the equally critical question: "Can this company's technology actually deliver on its promises — and what will break when we scale it?"
For software companies, SaaS platforms, and tech-enabled businesses, the technology stack IS the product. A beautiful cap table and growing revenue mean nothing if the underlying architecture is a house of cards that collapses under scale or if a key patent is owned by a contractor who just left.
Why Technology Due Diligence Matters
Protects your investment
Studies show that over 70% of technology acquisitions surface material issues during due diligence that weren't disclosed during preliminary discussions. These range from critical security vulnerabilities to undisclosed technical debt that requires millions in remediation.
Quantifies hidden costs
A company generating $5M in ARR might require $2M in infrastructure rewrites, security remediation, and tech debt paydown post-acquisition. Technology due diligence surfaces these costs before the deal closes, allowing you to adjust the purchase price or walk away.
Reveals scalability ceilings
Revenue might be growing 100% year-over-year, but if the database architecture was designed for 1,000 users and you're at 990, the technology will become the bottleneck within months. Tech DD identifies these scaling cliffs before they become your problem.
Validates the IP moat
Investors pay premiums for defensible technology. Tech DD verifies that the company actually owns its intellectual property — that patents are properly assigned, open-source licenses are compliant, and no contractor or former employee holds claims on core code.
The 7 Pillars of Technology Due Diligence
1. Code Quality
- Codebase health metrics
- Test coverage and CI/CD
- Coding standards
- Documentation completeness
2. Architecture
- System design review
- Scalability and performance
- Single points of failure
- Database strategy
3. Security
- Vulnerability assessments
- Compliance certifications
- Data protection practices
- Incident response readiness
4. Intellectual Property
- IP ownership chain
- Patent portfolio review
- Open-source license audit
- Contractor assignments
5. Technical Debt
- Legacy system inventory
- Deferred maintenance
- Framework obsolescence
- Remediation cost estimate
6. Engineering Team
- Team capability assessment
- Key person dependency
- Retention risk analysis
- Hiring pipeline strength
7. Infrastructure
- Cloud architecture review
- Scalability and redundancy
- Cost efficiency analysis
- Disaster recovery
Code Quality Assessment
Code quality is the foundation of technology due diligence. Poor code quality directly correlates with higher maintenance costs, slower feature delivery, and higher engineer turnover.
Quantitative metrics
- Test coverage: Aim for >70% on critical paths. Below 40% is a major risk.
- Cyclomatic complexity: High complexity = hard to maintain code.
- Code churn: Files changed frequently may indicate instability.
- Duplication: Duplicated code blocks signal technical debt.
- Defect density: Bugs per KLOC reveals quality trends.
Qualitative signals
- Documentation: README, architecture docs, API docs?
- Consistent patterns: Does the team follow coding standards?
- Dependency hygiene: Are libraries current and necessary?
- CI/CD maturity: Automated builds, tests, deployments?
- Version control: Branching strategy, commit quality, PR reviews?
Architecture Review
The architecture review assesses whether the system's design can support current operations and future growth.
Key architecture questions
- Monolith vs. microservices: Is the architecture appropriate for the team size?
- Database design: Single-write bottlenecks? Schema normalization?
- API design: Versioned, documented, consistent?
- Caching strategy: Is caching used effectively?
- Async processing: Long-running tasks offloaded to queues?
- Single points of failure: What happens when each component fails?
Security & Compliance
Security due diligence has become non-negotiable. A single breach post-acquisition can destroy deal value.
Security assessment areas
- Vulnerability scans: Known CVEs in dependencies?
- Penetration testing: Recent pentests? What was found?
- SOC 2 / ISO 27001: Current certifications or roadmap?
- Data encryption: At rest and in transit? Key management?
- Access controls: RBAC, MFA, least-privilege?
- Incident response: Documented IR plan? Last tested?
- GDPR / CCPA: Data privacy compliance?
Intellectual Property
IP ownership is one of the most common deal-killers in technology M&A. You're buying the technology, but does the company actually own it?
DEAL-KILLER
Founder/contractor IP not assigned
If early code was written by contractors or founders without IP assignment, they may claim ownership. Critical deal-killer.
DEAL-KILLER
Copyleft contamination
GPL/AGPL code in proprietary software may obligate open-sourcing the entire codebase, destroying IP value.
HIGH PRIORITY
Unverified patent claims
Patents should be verified: granted or pending? Which jurisdictions? Do they cover core technology?
HIGH PRIORITY
Open-source license audit
Full SBOM review. Missing attribution, incompatible licenses, or unknown dependencies create legal exposure.
WATCH
Trade secret documentation
Are trade secrets documented and protected with NDAs, access controls, and employee agreements?
Technical Debt
Technical debt is the cost of shortcuts taken to ship faster. Like financial debt, it compounds.
| Debt Category | What It Looks Like | Typical Remediation Cost |
|---|
| Legacy frameworks | Outdated language versions, EOL frameworks | $100K–$500K |
| Missing tests | <30% coverage on critical paths | $50K–$200K |
| Tight coupling | Monolith with circular dependencies | $200K–$1M+ |
| Documentation gaps | Tribal knowledge only | $25K–$100K |
| Infrastructure debt | Manual deployments, no IaC | $50K–$150K |
Engineering Team Assessment
Technology is built by people. The engineering team assessment evaluates whether the team can sustain and scale the technology post-acquisition.
Key team assessment areas
- Key person risk: Is there a single engineer who knows everything?
- Team composition: Balance of senior/junior, frontend/backend, DevOps?
- Retention risk: Are key engineers likely to stay post-acquisition?
- Hiring pipeline: Can the team recruit effectively? Time-to-hire?
- Engineering culture: Code reviews, blameless post-mortems?
- Compensation: Market-rate? Retention bonuses needed?
Infrastructure & Scalability
Infrastructure review checklist
- Cloud strategy: Single-cloud or multi-cloud? Lock-in risk?
- Auto-scaling: Can the system handle traffic spikes automatically?
- Database capacity: Utilization vs. limits. Read replicas? Sharding?
- Monitoring & alerting: Dashboards, SLOs, on-call rotation?
- Disaster recovery: RTO/RPO targets? Last DR test date?
- Cost at scale: Cloud bill at 5x current load?
- Backup strategy: What's backed up, how often, restoration tested?
Top Red Flags in Technology Due Diligence
DEAL-KILLER
IP owned by individuals, not the company
Code written by founders or contractors without IP assignment agreements.
DEAL-KILLER
Critical security vulnerabilities
Unpatched CVEs, plaintext passwords, missing encryption for sensitive data.
DEAL-KILLER
Single engineer dependency
One person holds all institutional knowledge. A ticking time bomb post-acquisition.
HIGH PRIORITY
No automated tests
Zero or minimal test coverage means every change is a roll of the dice.
HIGH PRIORITY
Monolithic architecture at scale
Tightly coupled monolith serving millions. Scaling requires a multi-year rewrite.
HIGH PRIORITY
No monitoring or alerting
The team discovers outages from customer complaints.
WATCH
Proprietary frameworks
Custom frameworks only the current team understands.
WATCH
Manual deployments
No CI/CD. Deployments are manual, error-prone, person-dependent.
Screen 10 Tech Targets for the Cost of 1 Hour of Consultant Time
A traditional tech DD consultant charges $300–$500/hour. Our proprietary-algorithm reports cover all 7 pillars — architecture, security, tech debt, IP, team, infrastructure — from $49 each. Run diligence on 10 companies for less than the cost of a single kickoff meeting.
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The Technology Due Diligence Process
1
Information Gathering
Collect architecture diagrams, code repos, infrastructure configs, security reports, IP assignments, team org charts, and process docs via a data room.
2
Automated Analysis
Run static code analysis, dependency scanners, security scanners, and cost analyzers. Generate quantitative metrics.
3
Architecture Deep Dive
Review system design, database schemas, API structures, and scalability patterns. Identify bottlenecks and SPOFs.
4
Team Interviews
Structured interviews with CTO, VP Engineering, and key engineers. Assess depth, key person dependencies, and cultural fit.
5
Risk Assessment & Report
Synthesize findings into a structured report with risk ratings, estimated remediation costs, and recommendations.
6
Deal Impact
Translate technical findings into financial impact: price adjustments, escrow, reps and warranties, integration plans.
Timeline & Cost
| Approach | Timeline | Cost | Best For |
|---|
| Traditional DD firm | 2–6 weeks | $25K–$150K+ | Large deals (>$50M) |
| In-house engineering | 1–3 weeks | Internal cost | Strategic acquisitions |
| proprietary-algorithm platform | <1 hour | $49 | Initial screening, SMB deals |
| Hybrid approach | 3–10 days | $5K–$25K | Mid-market deals |
Increasingly, investors use a hybrid approach: proprietary-algorithm platforms for initial screening, followed by targeted manual deep dives. This reduces both cost and timeline while maintaining rigor.
Technology Due Diligence Checklist
Code & Development
- ☐ Source code access and repository review
- ☐ Test coverage report (>70% target)
- ☐ CI/CD pipeline assessment
- ☐ Code review practices
- ☐ Development methodology
- ☐ Documentation completeness
Architecture & Scalability
- ☐ System architecture diagram review
- ☐ Database design and scaling strategy
- ☐ API documentation and versioning
- ☐ Load testing results
- ☐ Single points of failure identification
Security & Compliance
- ☐ Penetration test reports
- ☐ SOC 2 / ISO 27001 / HIPAA status
- ☐ Vulnerability scan results
- ☐ Data encryption (at rest and in transit)
- ☐ Access control policies and MFA
- ☐ Incident response plan
Intellectual Property
- ☐ IP assignment agreements from all contributors
- ☐ Patent portfolio review
- ☐ Open-source license audit (SBOM)
- ☐ No copyleft contamination
- ☐ Trademark registrations
Team & Operations
- ☐ Engineering org chart
- ☐ Key person risk assessment
- ☐ Retention agreements and vesting
- ☐ Hiring velocity and pipeline
- ☐ On-call rotation
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Frequently Asked Questions
What is technology due diligence?
Technology due diligence is the process of evaluating a target company's technology stack, software architecture, code quality, security posture, intellectual property, and engineering team as part of an investment or acquisition decision. The goal is to identify risks that could affect valuation or post-deal integration.
How long does technology due diligence take?
Traditional technology due diligence takes 2 to 6 weeks depending on company size and complexity. dodilligence can produce an initial technology assessment in under an hour, compressing the timeline dramatically.
What does a technology due diligence report include?
A tech DD report typically covers: software architecture review, code quality assessment, security and compliance audit, intellectual property ownership analysis, technical debt evaluation, infrastructure and scalability assessment, third-party dependency mapping, and engineering team capability review.
How much does technology due diligence cost?
Traditional technology due diligence from a specialized firm costs $25,000 to $150,000+. dodilligence provide comprehensive technology assessments from $49 ($39.20 with DI20-WELCOME) per company.
Who performs technology due diligence?
Technology due diligence is typically performed by specialized DD firms, technical consultants, or in-house engineering leaders. Increasingly, investors use proprietary-algorithm platforms to get initial assessments quickly and cost-effectively before commissioning deeper manual reviews.
What are the biggest red flags in technology due diligence?
The biggest red flags include: critical intellectual property owned by founders or contractors rather than the company, undocumented architecture with single points of failure, high technical debt with no remediation plan, security vulnerabilities or missing compliance certifications, and heavy dependence on a single engineer who may leave post-acquisition.
What is the difference between technical due diligence and IT due diligence?
Technical due diligence focuses on the engineering and product side — code, architecture, development practices, and engineering team capability. IT due diligence is broader and includes operational IT infrastructure, enterprise systems, vendor contracts, and end-user computing. For technology companies, they overlap significantly.
When should technology due diligence start in the deal process?
An initial technology screening should happen as early as possible — ideally before an LOI. proprietary-algorithm platforms make this cost-effective even for early-stage evaluation. Deep technology due diligence typically runs in parallel with financial and legal DD after exclusivity is granted.
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