Tech readiness for M&A and exit: Practical 30-90 day checklist

Preparing for sale or acquisition exposes tech problems that destroy value if they surface late. In my experience working with PE-backed businesses and scale-ups, a pragmatic, measurable approach to tech readiness for M&A and exit separates successful deals from lengthy price renegotiations and holdbacks.

Why this matters

Technology is no longer a box-tick for buyers, it is a primary determinant of price and deal certainty. Buyers routinely walk away or apply material discounts when they find poor security evidence, unclear IP ownership, brittle integrations, or undocumented vendor lock-in. Boards and CEOs need a concise, board-level tech briefing that translates technical risk into valuation impact and negotiable remediation items.

Without a replicable scorecard and a 30-90 day remediation plan, sellers rely on optimism. That optimism costs time, bid momentum, and often 5 to 15 percent of the headline valuation in my experience when avoidable issues emerge during late-stage due diligence.

30-90 day technology due diligence

Start with a simple 0-100 readiness score across five domains: Security, Contracts and IP, Data and Privacy, Architecture and Operations, and Transitionability. Score each domain 0-20, produce a total, and prioritise work by impact and effort. This quantification moves conversations from vague to commercial.

• Data room tech checklist: Provide a single labelled binder or secure folder with network architecture diagrams, data inventory, IP register, SOC2 or ISO artefacts, third-party contracts, change logs, and deployment runbooks. Include sample exportable datasets to prove you can extract and migrate core data.
• ISO 27001 evidence review: Buyers expect the evidence trail, not a certificate image. Supply the statement of applicability, recent internal audit reports, risk treatment plan, and the latest corrective actions log. Flag any open nonconformities and the planned closure dates.
• Cybersecurity posture assessment: Produce an executive summary showing asset inventory, last pentest date, vulnerability backlog age, patch cadence, incident response runbook and tabletop exercise results. Score the backlog by business impact and remediation complexity.

For M&A teams I often embed a short technology due diligence pack into the management presentation. If you need a checklist template to standardise evidence for multiple bidders, I use the same structure I link here for operator-led diligence, which removes ambiguity from buyer queries and shortens vendor Q&A cycles.

IT readiness for exit checklist

Practical verification beats theory. Focus on these three technical checkpoints in the first 30 days.

• Identity and access review: Produce a list of privileged accounts, recent access reviews, MFA coverage, and a remediation plan to remove orphaned accounts. Buyers will test who can access production, and unresolved privilege risks are a common de-risking request.
• IP and software licence review: Maintain an IP register that ties source repositories to contracts and employee or contractor assignment records. Identify any open source components with copyleft obligations. A clean IP trail stops title disputes that can kill a deal.
• SaaS contract exit clauses: Extract termination notice periods, data return and deletion clauses, and escrow clauses where relevant. Negotiate short-term amendments where exit timelines collide with long notice windows.

Each checklist item should include a remediation estimate: low complexity and cost under £10k and 30 days, medium £10-50k and 60 days, high over £50k and 90 days. That clarity helps boards decide what to fix pre-deal and what to disclose and price.

M&A IT checklist for integration

Buyers want a plausible IT integration plan, not a vague promise. Your M&A IT checklist must show sequencing, owners, and risk mitigations for the first 100 days post-close.

• IT integration plan: Deliver a 30-60-90 day integration runway that lists business-critical cutovers, parallel run requirements, data reconciliation points, and who signs off each stage. Include rollback criteria and a communication plan for stakeholders.
• Post-merger IT integration: Prioritise identity consolidation, change freeze windows, secure network segmentation, and ticketing and support handover. A common pattern I see is the acquirer underestimating the time to reconcile billing, licences and support SLAs, causing service outages in week two.
• ERP cutover risks: For ERP work, produce a cutover sequenced checklist, data reconciliation scripts, and a validation sign-off matrix. Identify critical interfaces that cannot be changed at cutover without business stoppage, and plan staged synchronisation where possible.

Quantify integration cost: a simple integration often needs a 6-12 week dedicated team, budgeted at £75k-£250k depending on ERP and customisations. Being transparent about that number prevents last-minute buyer surprises.

Cybersecurity due diligence and technology risk management

Cyber risk is a negotiation lever. Provide clear evidence and risk acceptance decisions so buyers can see what remains and why.

• Third-party supplier risk: Produce a supplier map with criticality ratings, contracts, and attestation evidence such as SOC2 reports or Cyber Essentials Plus certificates. Highlight any single supplier that would materially disrupt the business and your contingency plan.
• Legacy system dependency: Flag systems that cannot be patched, that require unsupported middleware, or that hold the only copy of production data. Buyers price this as a future cash and time cost; treat it as a disclosed liability with a remediation timeline to preserve value.

Assessing technical debt and cloud readiness

Technical debt quantification must be concrete. Break debt into functional debt, security debt and operational debt. For each item list the business impact, estimated developer days to remediate, and likely cost. That produces a measurable technical debt quantification that buyers respect.

Cloud migration readiness is not a binary yes or no. Score applications for portability, data compliance, network dependencies and runbook completeness. Low complexity migrations, such as containerised services, can be done in 30-60 days. Large monoliths often require replatforming and 6-12 months of effort.

Common Mistakes to Avoid

• Hiding known risks instead of documenting them with mitigations and timelines.
• Providing certificates without the supporting audit trail for ISO 27001 or SOC2.
• Waiting for buyer requests to create a data room tech checklist, causing rushed, error-prone uploads.
• Underestimating ERP cutover risks and failing to budget integration resource and contingency time.
• Failing to map third-party criticality, leaving single points of failure undisclosed.

Frequently Asked Questions

How long does a realistic 30-90 day remediation take?

Depends on scope. Security hygiene and access reviews are typically achievable in 30 days. Contract clean-up, IP assignment records and moderate refactoring normally take 60 days. Major replatforming or ERP remediation is usually a 90 day plus programme with staged deliverables.

What documentation will buyers insist on first?

Buyers request the data room tech checklist first, then evidence for security certifications and IP ownership. If those items are incomplete, expect detailed follow-up questions and likely scope reductions in the offer.

Can fixing tech issues increase my valuation?

Yes. Addressing high-probability negotiation risks such as orphaned access, unclear IP or large single-supplier dependency often removes discounting, preserves multiple, and can materially improve deal certainty and timing.

Tech readiness for M&A and exit is an executable programme, not a vague promise. A disciplined scorecard, a short 30-60-90 remediation plan with costs and complexity, and a tidy data room tech checklist convert technical risk into a negotiable commercial position. As a fractional CIO, CTO and CISO I have used these steps in UK mid-market deals to reduce buyer holdbacks and shorten sale timelines, making the difference between a stalled sale and a clean exit.