The Acquirer's Lens: How M&A Buyers Really Read Your Tech Stack

Executives building toward an eventual sale think about their technology the way they think about their product — is it good, does it work. Acquirers evaluate it almost entirely differently, and the gap is where deal value quietly disappears. · Juan Vegarra

Executives building or scaling a company with an eventual sale or strategic partnership somewhere in mind tend to think about their technology stack the way they think about their product: is it good, does it work, do customers like it. Acquirers evaluate it almost entirely differently, and the gap between those two lenses is where deal value quietly gets destroyed — usually discovered during diligence rather than addressed years earlier when it would have been inexpensive to fix.

Why so many deals disappoint

The scale of the problem across M&A broadly is worth grounding first. Research consistently shows that seventy to ninety percent of M&A deals fail to create the shareholder value their acquirers expected, and sixty-two percent fail to meet their stated financial objectives outright, with poor due diligence cited as one of the primary drivers.^[1] Technology integration specifically is a major contributor to that failure rate: roughly eighty-four percent of IT integrations encounter significant issues or fail outright, more than forty percent of acquirers report incompatible IT systems as a post-close challenge, and close to a third identify data integration specifically as their single biggest obstacle after signing.^[1] When technical due diligence specialists are brought in to look closely before a deal closes, they routinely uncover liabilities in the range of fifteen to forty percent of the acquisition price — costs that would have been entirely invisible without a dedicated pre-bid technical assessment.^[1]

The first question: is it actually yours

The acquirer's first real question isn't whether the technology works. It's whether it's genuinely owned in a way that survives the transaction intact. Vendor contracts with change-of-control clauses that trigger on acquisition, key-person dependencies on a handful of engineers who understand an undocumented system and nobody else does, open-source licensing obligations nobody tracked carefully as the codebase grew, data processing agreements that don't transfer cleanly to a new corporate parent — these are the findings that turn a clean acquisition into a renegotiated price or a walked deal, and they are rarely about whether the product itself is any good. Verizon's 2017 acquisition of Yahoo is the clearest public illustration of how expensive this category of surprise can get: previously undisclosed data breaches discovered during late-stage diligence forced a $350 million reduction in the purchase price, a number that had nothing to do with whether Yahoo's underlying technology or product was competitive.^[1]

The second question: what does it cost to integrate

The second question is integration cost, and acquirers evaluate it far more harshly than a standalone valuation of the technology would suggest on its own. A technology stack that's genuinely excellent but architecturally isolated — built on a different data model, a different cloud environment, a different set of core assumptions than the acquirer's own systems — carries an integration cost that gets subtracted directly from the price an acquirer is willing to pay, sometimes substantially. This is exactly where "best in class as a standalone company" and "valuable to this specific acquirer" diverge, and it's a divergence most sellers don't see coming, because it has nothing to do with the quality of what they actually built and everything to do with fit.

The third question: what entanglements exist

The third is the entanglement question, and it's the one most founders and executives underestimate the most, largely because none of the individual decisions that create it felt risky at the time they were made. Every contractual commitment made to a customer, a vendor, or a data partner during years of independent operation becomes something the acquirer inherits at close, and diligence teams are specifically hunting for entanglements that constrain what the acquirer can do afterward — exclusivity clauses, data-sharing agreements with a company that happens to compete with the acquirer, revenue-sharing structures that never anticipated a change of ownership and become awkward or unworkable once one happens. None of these were bad decisions when they were made. They become expensive specifically because nobody was making them with an eventual acquirer's constraints in mind, which is a reasonable way to run an independent company and a genuinely costly way to prepare for a sale.

Why comprehensive diligence success is so rare

It's worth being honest about how demanding the bar actually is. PwC research finds that only fourteen percent of acquisitions achieve comprehensive success across strategic, operational, and financial measures simultaneously, and most buyers spend only thirty to forty-five days in diligence, which is not enough time to catch everything even with a competent team looking hard.^[1] That compressed timeline is precisely why the burden falls on the seller to have already done the organizing work before diligence begins, rather than assuming a rushed buyer-side process will surface every issue and negotiate it fairly in the moment.

The honest counter-case

It would be a mistake to treat every acquirer concern as something a seller should have anticipated and fixed years in advance, because some entanglements are genuinely unavoidable byproducts of building a real, functioning business rather than a diligence-optimized shell company. A company with zero customer concentration risk, zero key-person dependency, and perfectly modular architecture disconnected from any specific acquirer's stack is, in a real sense, a company that hasn't fully committed to serving its actual customers well in the near term. The goal isn't a company engineered purely for acquirability at the expense of running the business. It's a company that has documented and can clearly explain its entanglements, rather than one that discovers them for the first time alongside the acquirer's diligence team, which is a meaningfully worse position to negotiate from.

What actually shows up in the final number

The organizations that command full value in a strategic transaction aren't necessarily the ones with the most impressive technology. They're the ones where a diligence team can move quickly because the contractual structure is clean, the key-person dependencies are documented and actively being mitigated, and the architecture doesn't require an expensive rebuild to fit into the acquirer's environment. None of this is glamorous work, and it rarely shows up in a pitch deck built to raise the next round. It shows up in the final number, and in whether the deal closes on the terms that were on the table at signing or gets renegotiated downward during diligence, the way it did for Yahoo. If a strategic exit or partnership is part of the long-term plan, the technology decisions being made today are already writing that outcome, years before anyone starts the formal process.

Juan Vegarra is the author of An Outsider's Playbook (forthcoming). The views here are his own. More essays · Write me