Technology due diligence evaluates whether a target company’s technology can reliably, securely, and economically support the business a buyer expects to own after an acquisition.
For a software company, that may require detailed analysis of architecture, source code, cloud infrastructure, software-development practices, cybersecurity, intellectual property, and scalability.
For a manufacturer, distributor, professional-services firm, or home-services business, the highest-priority issues may instead be ERP and accounting systems, hardware, cybersecurity, backups, software licenses, technology vendors, equipment interfaces, and upcoming technology investment.
The right scope depends less on whether the target calls itself a “technology company” and more on how dependent the business is on technology and what could materially affect the investment thesis.
For the broader acquisition framework, see DueDilio’s M&A Due Diligence Guide.
What Is Technology Due Diligence?
Technology due diligence—also called technical due diligence or IT due diligence—is a structured pre-acquisition assessment of the systems, software, infrastructure, cybersecurity, data, technology vendors, technical personnel, intellectual-property dependencies, and technology costs supporting a target company.
The objective is to identify issues that could affect:
- continued business operations;
- security and data protection;
- future growth;
- product development;
- required capital investment;
- customer service;
- staffing;
- Day 1 readiness; or
- the economics and structure of the transaction.
Technology diligence should also be distinguished from legal diligence.
A technical reviewer can identify software, architecture, security, documentation, dependency, and operational issues. Transaction counsel should determine legal conclusions involving intellectual-property ownership, licensing rights, privacy obligations, contract assignment, change-of-control provisions, and legal exposure.
Technology Due Diligence Is Not Just for Software Companies
Almost every modern business relies on technology.
A traditional SMB may depend on:
- accounting software;
- payroll systems;
- CRM;
- scheduling;
- payment processing;
- cloud storage;
- email;
- customer databases;
- mobile devices;
- industry-specific applications;
- cybersecurity controls; and
- outside IT providers.
A manufacturer may additionally rely on:
- ERP systems;
- inventory software;
- production systems;
- computerized equipment;
- CAD or BIM tools;
- warehouse technology; and
- interfaces between physical equipment and software.
A system does not need to be proprietary to create acquisition risk.
If a critical application is obsolete, poorly documented, insecure, controlled by one employee, dependent on an outside vendor, or expensive to replace, the buyer may inherit a material operational or financial issue.
When Does Technology Due Diligence Matter Most?
The scope should become deeper when one or more of the following is true:
- proprietary software contributes materially to the target’s value;
- the company holds sensitive customer or employee data;
- revenue depends heavily on digital systems;
- technology outages could stop operations;
- the business has experienced cybersecurity incidents;
- the company relies heavily on third-party technology vendors;
- the buyer expects rapid growth;
- significant technology modernization is part of the investment thesis;
- the target uses specialized or aging hardware;
- technical employees possess important undocumented knowledge; or
- the buyer expects substantial system integration after closing.
A traditional company with limited technology may need a focused IT-risk review rather than a full code-level diligence engagement.
The Technology Due Diligence Process
1. Start With the Investment Thesis
Before reviewing the technology stack, identify the business assumptions technology must support.
Questions might include:
- Can the current systems support expected growth?
- Is significant technology investment already implied by the acquisition plan?
- Could a cybersecurity event materially impair the business?
- Does proprietary software justify part of the purchase price?
- Will the business continue operating if a key employee or vendor leaves?
- Can critical systems transition to new ownership without disruption?
These questions determine where diligence effort should be concentrated.
2. Identify Business-Critical Technology
Create an inventory of systems supporting:
- revenue generation;
- customer service;
- billing and collections;
- accounting;
- payroll;
- operations;
- production;
- inventory;
- communication;
- data storage;
- cybersecurity; and
- proprietary products.
The objective is not merely to list applications. It is to understand which technologies the business cannot operate without.
3. Collect the Core Technical Information
Depending on scope, common materials may include:
- architecture diagrams;
- application inventories;
- hardware inventories;
- cloud-environment information;
- software-license agreements;
- major vendor contracts;
- cybersecurity policies;
- incident history;
- backup and disaster-recovery procedures;
- technical organization charts;
- technology budgets;
- product roadmaps;
- source-code repositories;
- development documentation;
- data-flow diagrams; and
- technology policies.
Buyers who want a detailed request-and-review framework can use DueDilio’s separate Technology Due Diligence Checklist.
4. Interview Management and Technical Personnel
Documents rarely provide the complete picture.
Interviews can clarify:
- why systems were designed a certain way;
- which problems are known but unresolved;
- where knowledge is concentrated;
- which modernization projects have been deferred;
- what security incidents have occurred;
- which vendors are difficult to replace; and
- what technology management believes will require investment after closing.
5. Test the Highest-Risk Areas
The level of testing depends on the transaction.
For a traditional SMB, this might mean reviewing:
- administrative access;
- backups;
- aging infrastructure;
- vendor dependence;
- cybersecurity controls; and
- business-critical systems.
For a software company, the review may extend into:
- architecture;
- source code;
- software-development practices;
- cloud environments;
- scalability;
- third-party dependencies; and
- technical debt.
6. Translate Technical Findings Into Transaction Issues
A useful technology diligence report should not stop at “this system is old” or “this control is weak.”
The buyer needs to understand:
- why the issue matters;
- how material it is;
- whether it requires action before closing;
- what may need to be remediated after closing;
- what resources may be required; and
- whether it could affect price, transaction terms, or the buyer’s operating plan.
Major Technology Due Diligence Workstreams
Infrastructure and IT Systems
Review the technology foundation supporting daily operations.
Areas may include:
- servers;
- networks;
- devices;
- cloud environments;
- connectivity;
- hardware age;
- system capacity;
- monitoring;
- redundancy;
- backups;
- disaster recovery; and
- business continuity.
Key questions include:
- Are critical systems reliable?
- Are important components obsolete?
- Are backups tested?
- Is there a clear recovery process?
- What technology investments may be required shortly after closing?
Software Applications and Licensing
Review the target’s important third-party and internally developed applications.
Consider:
- application inventory;
- licensing;
- subscriptions;
- integrations;
- customization;
- support status;
- renewal dates;
- vendor dependency;
- assignment provisions; and
- change-of-control requirements.
Legal counsel should review contractual rights and transferability where those issues are material.
Proprietary Software and Architecture
When proprietary software contributes materially to the value of the target, the review may examine:
- architecture;
- programming languages and frameworks;
- databases;
- APIs;
- cloud infrastructure;
- integrations;
- deployment processes;
- monitoring;
- documentation;
- testing; and
- third-party dependencies.
Important questions include:
- Can another team maintain the system?
- Is the architecture appropriately documented?
- Does the system depend on unsupported technology?
- Can it support the buyer’s expected growth?
- Are there major architectural constraints that will require investment?
Source Code and Software Development
A source-code review may be appropriate when proprietary software is material to the transaction.
Potential areas include:
- code organization;
- automated testing;
- version control;
- code-review practices;
- dependency management;
- deployment automation;
- security practices;
- documentation; and
- technical debt.
The goal is not to determine whether the code is perfect.
It is to determine whether the software can reasonably be maintained, secured, extended, and operated after closing.
For software-development security, the NIST Secure Software Development Framework provides a useful reference. NIST notes that software purchasers can use the framework’s common vocabulary when communicating with suppliers during acquisition processes.
Cybersecurity
Cybersecurity diligence should reflect the target’s actual exposure.
Areas may include:
- security governance;
- identity and access management;
- privileged accounts;
- multi-factor authentication;
- endpoint security;
- network security;
- cloud security;
- vulnerability management;
- encryption;
- security incidents;
- incident response;
- employee training;
- cyber insurance;
- vendor access; and
- remediation history.
For smaller companies, NIST publishes a Cybersecurity Framework 2.0 Small Business Quick-Start Guide specifically designed to help SMBs establish and evaluate cybersecurity risk-management practices.
A cybersecurity issue should ultimately be translated into business and transaction impact, not left as a technical severity label.
Data and Privacy
Understand:
- what data the company collects;
- where it is stored;
- who can access it;
- which third parties receive it;
- how long it is retained;
- how it is backed up; and
- which information is particularly sensitive.
Technical diligence can identify the systems and practices involved.
Applicable privacy laws, contractual obligations, representations, transfer rights, and other legal conclusions should be reviewed with qualified counsel.
Intellectual Property and Technology Ownership
Technical reviewers may help identify:
- proprietary code;
- source-code repositories;
- third-party components;
- development practices;
- contractors involved in software creation; and
- important technology dependencies.
Legal counsel should determine:
- ownership;
- assignment;
- licensing;
- infringement exposure;
- transferability; and
- other legal rights involving the technology.
This distinction is important: identifying code is not the same as proving legal ownership of it.
Technical Debt
Technical debt describes accumulated shortcuts, deferred work, or technology decisions that may increase future maintenance or development effort.
Technical debt is not automatically a deal breaker.
The more useful questions are:
- What needs remediation?
- Why?
- How urgent is it?
- Does it affect reliability or security?
- Does it limit expected growth?
- Will it make future development materially harder?
- What level of effort may be required?
Avoid arbitrary rules such as declaring a particular percentage of technical debt unacceptable.
Scalability and Performance
If growth is part of the investment thesis, determine whether the systems can support it.
Ask:
- What happens if transaction volume doubles?
- Can the systems support additional locations?
- Can the platform handle more users or customers?
- Are there known bottlenecks?
- Does growth require major replacement or rearchitecture?
The relevant question is whether the technology can support the buyer’s plan, not whether it could theoretically scale forever.
Technology Team and Key-Person Risk
Technology risk can be concentrated in people.
Review:
- technical roles;
- responsibilities;
- tenure;
- administrative access;
- documentation;
- contractor usage;
- outsourcing;
- hiring requirements; and
- succession risk.
Ask:
- Who understands the critical systems?
- Who controls administrative credentials?
- What happens if a key employee leaves?
- Is important knowledge documented?
- Does the buyer need to retain specific personnel?
Technology Vendors and Outsourcing
Many SMBs rely heavily on outside technology providers.
Relevant vendors can include:
- managed IT providers;
- cloud platforms;
- software developers;
- cybersecurity firms;
- hosting companies;
- software vendors;
- contractors; and
- specialized technology consultants.
Evaluate:
- importance to operations;
- dependency;
- service levels;
- pricing;
- access privileges;
- replacement options; and
- contract terms.
For critical ICT suppliers, NIST’s July 2026 Cybersecurity Supply Chain Management Due Diligence Assessment Quick-Start Guide provides a current framework for evaluating supplier risk. The NIST guide is specifically scoped to ICT supplier due diligence; it should not be treated as a general M&A diligence standard.
Technology Costs and Near-Term Investment
Technology diligence should help distinguish three types of spending:
Run-rate spending — normal recurring cost required to operate the business.
Remediation or catch-up spending — investment needed to address existing problems or deferred upgrades.
Growth investment — technology spending required to execute the buyer’s future strategy.
Review may include:
- software subscriptions;
- cloud costs;
- IT providers;
- technical payroll;
- hardware;
- cybersecurity;
- product development;
- planned upgrades;
- deferred projects; and
- expected replacements.
This distinction helps the buyer avoid treating necessary remediation as discretionary future investment.
Day 1 and Change-of-Control Risk
For many SMB acquisitions, the immediate question is not a complex post-merger IT integration.
It is simply:
Will the technology continue working when ownership changes?
Confirm:
- critical accounts;
- administrative credentials;
- email;
- domains;
- cloud accounts;
- accounting systems;
- payroll systems;
- payment systems;
- software licenses;
- vendor relationships;
- backups; and
- access to technical documentation.
Determine what must transfer, what must be recreated, and what requires third-party consent.
What DueDilio Project Data Shows
Technology diligence is not limited to software acquisitions.
In a 2025 DueDilio project, a buyer was acquiring a family-run manufacturing business with approximately $4 million in annual revenue and a transaction value between $1 million and $3 million.
The buyer specifically requested technology diligence to assess:
- the target’s current IT architecture;
- technology capabilities and gaps;
- obsolescence risk;
- near-term technology capital requirements;
- interfaces between technology and manufacturing equipment; and
- readiness for Building Information Modeling tools.
The buyer wanted a report identifying current capabilities, risks, gaps, and likely areas of investment.
This is one anonymized DueDilio project example, not a representative sample of all SMB acquisitions. It illustrates why technology diligence should be driven by the business’s technology dependencies and the buyer’s investment thesis, not simply by whether the target sells technology.
How to Prioritize Technology Findings
Not every technology issue should receive the same weight.
Priority 1 — Could Affect the Decision to Buy or Close
Examples might include:
- material cybersecurity exposure;
- inability to establish rights to critical technology;
- core systems incapable of supporting the investment thesis;
- severe continuity risks; or
- critical technology controlled by someone who will not remain after closing.
Priority 2 — Could Affect Price, Terms, or Near-Term Investment
Examples might include:
- significant remediation needs;
- near-term hardware replacement;
- software-license issues;
- material technical debt;
- vendor-contract problems; or
- substantial migration requirements.
Priority 3 — Primarily Post-Close Improvement
Examples might include:
- documentation improvements;
- noncritical application consolidation;
- workflow automation;
- modernization opportunities; or
- longer-term process improvements.
This risk-based structure is more useful than treating every checklist item as equally important.
Technology Due Diligence Red Flags
Potential red flags include:
- critical systems with no clear owner;
- unsupported or obsolete systems;
- untested backups;
- significant cybersecurity weaknesses;
- unclear rights to proprietary technology;
- one-person technical dependency;
- poor administrative access controls;
- material technical debt;
- scalability limitations;
- major vendor dependence;
- undocumented infrastructure;
- unsupported software; and
- substantial technology investment not reflected in the acquisition model.
A red flag does not automatically mean the buyer should walk away.
It means the buyer should determine what the issue is, how material it is, what evidence supports it, whether it can be remediated, and what it means for the transaction.
Technology Due Diligence Is Not a Guarantee
No technology review can prove that a company will never experience:
- a cyberattack;
- software failure;
- outage;
- data loss;
- vendor failure; or
- unexpected technology expense.
The purpose of diligence is to improve the buyer’s understanding of the current environment, test material assumptions, identify known weaknesses, and make remaining uncertainty visible enough to make an informed acquisition decision.
What Should a Technology Due Diligence Report Include?
| Finding | What the Buyer Needs to Know |
|---|---|
| Issue | What was identified? |
| Evidence | What supports the conclusion? |
| Business impact | Why does it matter? |
| Severity | How material is it? |
| Timing | When does it require action? |
| Remediation | What may need to change? |
| Effort | What level of resources may be required? |
| Transaction impact | Could it affect price, terms, closing, or post-close plans? |
Precise budgets or implementation timelines should only be provided when the diligence team has enough evidence to support them.
How Much Technology Due Diligence Is Enough?
There is no universal scope.
The appropriate depth depends on:
- importance of technology to revenue;
- proprietary software;
- sensitivity of data;
- cybersecurity exposure;
- regulatory considerations;
- complexity of systems;
- transaction size;
- buyer expertise;
- quality of documentation; and
- the post-close strategy.
A traditional SMB may need a focused IT-risk assessment.
A software company whose product represents much of the acquisition value may require architecture review, source-code analysis, cybersecurity, data, technical-team assessment, scalability review, and more extensive software diligence.
The scope should follow the risk.
Who Should Perform Technology Due Diligence?
Depending on the target, the buyer may use:
- a CTO or senior technology advisor;
- software architect;
- cybersecurity specialist;
- infrastructure or cloud professional;
- software engineer;
- data specialist;
- operational-technology specialist; or
- technology-focused M&A advisor.
Attorneys may separately address intellectual-property rights, privacy, contracts, and other legal questions.
One specialist may cover several technical areas in a smaller transaction. More complex acquisitions may require multiple specialists.
For broader provider-selection guidance, see How to Choose a Due Diligence Firm.
Questions to Ask a Technology Due Diligence Provider
Before hiring a provider, ask:
- What types of acquisitions have you diligenced?
- Have you evaluated companies with technology similar to this target?
- Who will actually perform the technical work?
- What systems and repositories will you review?
- Is source-code review included?
- What cybersecurity procedures are included?
- How will you evaluate technology vendors and dependencies?
- How will you distinguish urgent remediation from longer-term improvements?
- How will significant findings be communicated before the final report?
- What deliverables will I receive?
Bottom Line
Technology due diligence should answer a practical acquisition question:
What technology capability, dependency, risk, and future investment am I actually buying?
For a software company, answering that question may require detailed analysis of architecture, code, cybersecurity, data, technical talent, and scalability.
For a traditional SMB, it may require a focused review of critical applications, infrastructure, cybersecurity, vendors, backups, equipment, obsolescence, and future technology spending.
The best scope is not the longest one.
It is the scope that tests the technology assumptions that matter to the transaction.
For a detailed item-by-item review, use DueDilio’s Technology Due Diligence Checklist.
If you need outside technology expertise, you can also browse DueDilio’s network of vetted M&A service providers.
Frequently Asked Questions (FAQ)
Technology due diligence is the assessment of a target company’s technology systems, software, infrastructure, cybersecurity, data, vendors, technical team, and related risks before an acquisition. Its scope should reflect how technology affects the target’s operations and value.
No. Traditional businesses can depend heavily on ERP systems, accounting software, CRM, payment systems, production technology, networks, cloud applications, cybersecurity, and other technology. A focused technology review may be useful whenever technology failure, obsolescence, or required investment could materially affect the acquisition.
Cybersecurity is one technology-diligence workstream. Broader technology diligence can also evaluate infrastructure, software architecture, applications, vendors, data, technical debt, staffing, costs, scalability, backups, and Day 1 continuity.
Common materials can include architecture diagrams, application and hardware inventories, cloud information, vendor agreements, security policies, incident history, backup procedures, technology budgets, organization charts, development documentation, and source-code repositories when relevant.
Source-code review may be appropriate when proprietary software contributes materially to the target’s value or operations. A traditional SMB whose technology consists primarily of commercial applications may not need detailed code review.
Technical debt refers to accumulated shortcuts, deferred engineering work, or technology decisions that can increase future maintenance, security, scalability, or development effort. Buyers should evaluate its business impact and remediation requirements rather than relying on a universal numerical threshold.
Cybersecurity diligence may examine access controls, vulnerabilities, incident history, network and cloud security, backups, incident response, vendor access, and security governance. The appropriate depth depends on the target’s systems, data, industry, and risk exposure.
There is no standard duration. Timing depends on the complexity of the target’s technology, access to information, cybersecurity scope, proprietary software, testing requirements, and the depth of analysis required for the transaction.
Potential red flags include obsolete critical systems, cybersecurity weaknesses, untested backups, unclear rights to important technology, key-person dependency, unsupported software, material technical debt, licensing problems, vendor lock-in, poor documentation, scalability constraints, and significant unplanned technology investment.
No. Technology diligence can identify weaknesses, test assumptions, and make known risks more visible, but it cannot guarantee that a future cybersecurity incident, outage, software failure, vendor problem, or unexpected technology expense will not occur.
