Tech stack and technical debt: a stack map and an access request list.

How to check a company's tech stack?

Check a company's tech stack by mapping its public applications, tags, domains and hosting, then reconciling those observations with authorized architecture, code and vendor records. Public signals show part of the stack; they cannot establish every internal dependency or the condition of the code.

A tech stack is the set of applications, infrastructure, data connections and tools a business uses to deliver its services.

The technology due diligence hub connects the stack to the acquisition plan. A technical debt assessment records what the evidence supports and the access needed to resolve the remaining questions.

1. Agree the business services and operating requirements the stack must support.
2. Record public technologies and dependencies with a source and observation date.
3. Request authorized architecture, repository, support and vendor evidence from responsible owners.
4. Trace supported gaps to business consequences, proposed actions and completion checks.

What is technical debt in simple terms?

Technical debt is the cost of shortcuts in a system that must be paid back later as rework. A shortcut may have served an earlier need, but its current effect depends on how the system is used, maintained and expected to change.

Technical debt is the cost of shortcuts in a system that must be paid back later as rework. Our working definition.

Age alone does not establish technical debt. Review the supported maintenance burden, dependencies and constraints against the operating plan. The privacy compliance audit addresses a separate question: how tracking, notices and consent align with the data workflow and counsel's requirements.

Can you give me an example of technical debt?

An example of technical debt is a shared application template with a workaround that must be repeated whenever the customer journey changes. The review would inspect the implementation and change records with authorization before concluding that the workaround creates material rework or risk.

This is an illustrative example, not a finding about a target. A visible error can prompt an internal question; it does not reveal whether the cause sits in shared code, configuration, an integration or a vendor service.

AI-related dependencies need their own evidence. The AI due diligence guide separates public AI claims from the authorized records needed to test production use and operating controls.

How to manage technical debt?

Manage technical debt by linking each supported finding to an operating consequence, an owner and a verification step. Rank the work against the acquisition plan, retain unresolved questions and confirm dependencies before changing a shared system.

• Record the evidence, affected service and consequence of leaving the issue unresolved.
• Distinguish a confirmed finding from a suspected dependency or missing record.
• Agree the action, responsible owner, effort assumptions and verification method.
• Sequence changes around customer continuity, integrations and vendor commitments.

The post-merger IT integration plan connects those dependencies to consolidation decisions. A proposed replacement needs evidence of continuity before the current service is retired.

Which parts of the stack are visible from outside?

Front-end templates, public tags, customer-facing applications and hosting signals can be visible from outside. Application internals, private data integrations, code condition and vendor commitments need authorized access; a public vendor tag does not establish a contract or prove how the application operates.

Before authorization we use passive public sources only: DNS, certificate transparency, third-party internet-scan datasets, and the target’s public pages at normal browsing rates. No port scans, vulnerability scans or login attempts without written authorization.

Use the IT due diligence checklist to record the document or authorized check that would answer each open question. The IT infrastructure assessment reviews the hosting, identity and recovery dependencies around the application stack.

What does the technical debt assessment deliver?

The assessment delivers a stack map, technical debt flags and an access request list. Supported findings carry their evidence and proposed owners; unresolved questions identify the record needed to answer them before a remediation commitment is made.

See the sample diligence deliverables for the readout format and the 100-day value creation and hardening plan for the handover of agreed work.