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The financials checked out. The client list was impressive. The growth trajectory looked like a hockey stick heading in exactly the right direction.
So you closed the deal.
Six months later, you're staring at two incompatible software systems, a cybersecurity vulnerability nobody flagged during negotiations, and an integration timeline that's ballooned from "90 days" to "maybe by next year." Sound familiar?
Technology integration issues account for approximately 30% of failed mergers, according to research from Deloitte.¹ And companies that perform thorough technology due diligence are 2.8 times more likely to achieve a successful outcome than those that skip it.²
Whether you're on the buying side trying to assess what you're really acquiring, or the selling side trying to maximize your company's valuation, IT due diligence in mergers and acquisitions isn't optional anymore. It's the difference between a deal that builds lasting value and one that quietly bleeds money for years.
This post breaks down what a thorough IT due diligence process looks like, where most companies get it wrong, and how to turn technology from a deal risk into a deal advantage. (For a deeper look at how Sentry supports businesses through the entire M&A technology lifecycle, visit our Mergers & Acquisitions page.)
Let's be honest about why this happens. In most transactions, the financial and legal teams take the lead. They're looking at the books, the contracts, the liabilities. And they're good at what they do.
But here's the problem: a finance professional or attorney can look at a technology line item and tell you how much a company spends on IT. What they can't tell you is whether that spend is actually protecting the business, whether those systems will integrate with yours, or whether that "custom software platform" is actually a ticking time bomb built in a programming language nobody supports anymore.
As John Ohlwiler, CEO of Sentry Technology Solutions, puts it: "A finance guy or a legal guy is not going to go through a cybersecurity framework and controls like CIS or NIST. They're not going to go through some of the other compliancy and liability risk assessments that a cybersecurity expert will go through."
That gap between financial awareness and technical understanding is where deals go sideways. The KPMG 2024 Technology M&A Survey found that assessing the accuracy and completeness of technology platforms, ensuring cybersecurity compliance, and understanding scalability were among the top challenges in conducting due diligence for both corporate and private equity buyers.³
The takeaway? If your due diligence team doesn't include someone who can actually evaluate technology infrastructure at a deep, operational level, you're flying blind on one of the most critical aspects of the deal.
Not all technology assessments are created equal. A surface-level review of the IT budget is not due diligence. It's a starting point at best and a false sense of security at worst.
A comprehensive IT due diligence process should cover several critical areas:
| Due Diligence Area | What to Evaluate | Why It Matters |
|---|---|---|
| People & Processes | Who manages IT, what specialties exist, how are responsibilities divided | Understanding operational capability and knowledge gaps |
| Software & Systems | What platforms are in use, integration capabilities, data portability | Determines integration complexity and timeline |
| Contract Review | Vendor agreements, license terms, cancellation clauses, renewal dates | Avoids inheriting unfavorable long-term commitments |
| Cybersecurity Posture | Frameworks in use, compliance status, breach history, vulnerability assessments | Identifies risk exposure and regulatory gaps |
| Business Impact Analysis | What happens if critical systems go down, recovery time objectives | Quantifies operational risk in dollar terms |
| Infrastructure Assessment | Hardware age, cloud vs. on-premise, scalability readiness | Reveals hidden upgrade costs and capacity limitations |
Ohlwiler explains the difference between surface-level and thorough assessments: "Good IT diligence is looking at people and the processes that they're going through. It's running that business impact analysis. It's looking at the different software sets and what options they have when it comes to integration, when it comes to getting data out and getting data in. It's looking at the contract terms around what you're actually required to do, and what you can cancel, or what you may have to maintain."
The emphasis on contract terms is something many buyers overlook. Imagine acquiring a company only to discover they're locked into a three or four-year software contract you can't exit. Now you're paying for technology you don't want or need, and there's nothing you can do about it until the contract expires.
If there's one area where insufficient due diligence can torpedo a deal's value faster than anything else, it's cybersecurity.
It's not just about whether the target company has antivirus software installed. It's about understanding their entire security posture: What frameworks are they following? Are they meeting regulatory requirements for their industry? Have they had incidents they haven't fully disclosed? What does their insurance situation look like?
This matters enormously because cybersecurity vulnerabilities don't just represent technical risk. They represent financial risk, legal risk, and reputational risk. A serious vulnerability or prior breach discovered after closing can derail the value of an entire acquisition.
And cybersecurity gaps can directly limit your market.
Ohlwiler shared a telling example: "We had a company that was looking at selling. They went through a cybersecurity audit with us and changed a few things about their cybersecurity. And they were able to present to different buyers that they weren't able to present to before because they met certain requirements."
The result? Access to buyers who could pay more, specifically because those larger buyers had more stringent security requirements tied to their own client obligations. Improving cybersecurity posture didn't just reduce risk. It literally expanded the seller's market and increased their valuation.
Whether you're buying or selling, technology maturity is a valuation lever that too many business leaders underestimate.
On the selling side, the equation is straightforward: the more mature your technology operations, the higher your valuation. Mature technology means lower operational risk, better efficiency, easier integration for the buyer, and fewer surprises after closing.
On the buying side, understanding the target's technology maturity helps you accurately price the deal. If you're acquiring a company running on outdated, unsupported systems, that's not just a technology problem. It's a business continuity risk that should be reflected in your offer.
Consider the difference between a company running well-known, widely supported platforms like Microsoft 365 or Salesforce versus one running some legacy system built by a vendor that went out of business ten years ago. The first scenario gives the buyer confidence: there are consultants available, integration paths are well-documented, and support is readily accessible. The second scenario? That's a ticking clock. If that system goes down, nobody can fix it quickly, and the business impact could be severe.
Research from McKinsey indicates that between 40-60% of expected synergies in M&A deals are directly linked to IT integration success.⁴ When you think about it that way, technology maturity isn't a secondary consideration. It's central to whether the deal actually delivers the value you paid for.
Plenty of companies close deals without paying to do proper IT due diligence. Most of them just pay for it for years afterward.
Ohlwiler has seen this play out firsthand: "There have been a few times where people have talked to me about how it's been a year and a half, two years, and they had a company buy out another company, and they just haven't been able to integrate these IT systems. It's causing a lot of operational inefficiencies. And they're unfortunately not making the profit they thought they were going to because of all these operational inefficiencies."
That's the horror story nobody wants, but it happens more often than you'd think. You don't get the value out of the transaction that you paid for because you didn't understand the technology landscape before you signed.
Industry data backs this up. According to CFA Institute research, 70% to 90% of M&A deals fail to meet their financial objectives, with poor due diligence frequently cited as a primary reason.⁵ Technology integration problems are consistently ranked among the top five issues that emerge after a merger closes.
The lesson is clear: the cost of thorough IT due diligence before a deal is a fraction of the cost of dealing with integration failures after one.
If you're on the selling side, or you think you might want to be in the next few years, here's the reality check. Most business owners in the small to mid-market space don't plan their exit three to five years in advance. Usually, a health issue or life change triggers the decision, and suddenly they're trying to sell a company that isn't optimized for sale.
That's the worst-case scenario for maximizing your valuation.
The smart move is to start preparing your technology infrastructure well before you're ready to list. Here's what that looks like:
Modernize your core systems.
If you're running legacy software that's hard to support or integrate, now is the time to migrate. Buyers want systems they can work with, not systems they have to replace.
Get your cybersecurity house in order.
Conduct a thorough security audit, implement recognized frameworks like CIS or NIST, and document everything. This alone can open doors to higher-value buyers.
Audit your vendor contracts.
Know your terms, your renewal dates, and your exit options. Nothing kills deal momentum like discovering a contract that can't be renegotiated.
Document your IT operations.
Create clear documentation of who does what, how systems interact, and what your disaster recovery plan looks like. This makes the buyer's diligence process smoother and signals operational maturity.
Conduct a business impact analysis.
Understand what happens when critical systems go down and what that means in dollar terms. This helps you prioritize investments and gives buyers confidence that you understand your own risk profile.
The companies that invest in technology maturity before going to market consistently achieve better valuations. It's not just about having good technology. It's about demonstrating that your business runs on a foundation that reduces risk and enables growth for whoever acquires it.
Mergers and acquisitions represent some of the highest-stakes decisions a business leader will ever make. Whether you're evaluating an acquisition target or preparing your own company for sale, the technology layer of the transaction demands the same rigor and expertise as the financial and legal layers.
The difference is that most M&A teams don't have deep technology expertise in-house. That's where a trusted technology partner makes all the difference.
At Sentry Technology Solutions, we've guided businesses through the technology side of mergers and acquisitions, from pre-sale cybersecurity audits that expand your buyer pool to comprehensive IT due diligence assessments that protect buyers from costly surprises. We assess your technology maturity, build strategic plans based on where you are and where you need to go, and partner with you through the entire process.
Don't let technology be the reason your next deal underperforms. Schedule a discovery call and let's talk about how to make technology work for your transaction, not against it.
Sources:
¹ Deloitte, "Technology Integration in M&A," 2024. Research indicates technology integration issues account for approximately 30% of failed mergers. ² McKinsey & Company, "Technology Due Diligence as a Driver of Acquisition Value." Companies performing thorough technology due diligence are 2.8 times more likely to achieve successful outcomes. ³ KPMG, "2024 Technology M&A Survey," January 2025. Survey of 150 US-based technology companies and PE firms on M&A activity and due diligence challenges. ⁴ McKinsey & Company, "Synergy Realization in M&A Transactions." Research showing 40-60% of expected deal synergies are tied to IT integration success. ⁵ CFA Institute Enterprising Investor, "What's the Winning Ingredient in M&A? The Answer Lies in Due Diligence," February 2025. Analysis citing 70-90% of M&A deals fail to meet financial objectives.