Tool Sprawl, and How Marketing Stacks Get Bloated

The martech landscape passed 15,000 tracked tools in 2025, up 9% in a single year, and most marketing teams feel that growth as a slow accumulation of logins nobody fully remembers buying. Tool sprawl is not the result of one reckless quarter. It is the sum of many small, defensible decisions that were each right at the time and never reexamined afterward. Understanding how stacks bloat is the first step to keeping one lean, because the forces that add tools are quiet and constant while the forces that remove them are rare.

How stacks balloon

Almost every tool in a bloated stack arrived through a reasonable door. A campaign needed a specific capability, a vendor ran a good demo, a new hire brought a favorite platform, a one-off project required a point solution that then outlived the project. None of these is a mistake on its own. The mistake is structural, that nothing in the process ever forces a tool back out. Acquisition is easy and continuous. Removal requires someone to notice, build a case, and absorb the disruption of a change. The asymmetry guarantees growth in one direction.

• Shadow purchases: tools bought on a card or a free tier that never passed through procurement and never appear on the master list
• Leadership turnover: each new marketing leader brings preferred platforms and rarely retires the previous regime's
• Feature overlap creep: the CRM, the automation platform, and the analytics tool each grow into each other's territory, so the same job ends up owned three times
• Project residue: point tools bought for a single launch that quietly renew long after the launch is forgotten

The hidden costs

The subscription line is the cost everyone sees and the smallest part of the problem. Every additional tool multiplies the integration surface, because each one has to talk to the others, and each connection is a thing that can break and a thing someone has to maintain. Every tool also demands training and attention, and attention is finite, which is why so much purchased capability goes untouched. Most corrosive of all is the data cost. When the same customer lives in five systems that define a record differently, no dashboard can be fully trusted, and teams quietly stop believing their own numbers.

The utilization gap

Sprawl shows up most plainly in how little of the stack gets used. Gartner found marketers using only about a third of their stack's capability by 2023, down from 42% in 2022 and 58% in 2020, a steady decline even as spend rose. The same research has organizations putting roughly a quarter of the marketing budget into technology. Put those together and the picture is stark, since money flows in faster than capability gets used, and the gap between owned and used is where the waste pools. A tool at full price and a fraction of its use is not an investment. It is a recurring charge for optionality nobody exercises.

Why sprawl persists

If the costs are this clear, the obvious question is why stacks stay bloated, and the answer is that nobody owns subtraction. Adding a tool has a champion, a budget line, and a problem it visibly solves. Removing one has none of those. It has a risk that something breaks, a person whose workflow gets disrupted, and no immediate reward. Renewals auto-process in the background while everyone is busy. Governance, when it exists, tends to police new purchases rather than audit old ones. The result is a stack that only ever grows, punctuated by the occasional crisis-driven cleanup that resets the count and then starts climbing again.

How to consolidate

Consolidation is less about a dramatic purge and more about installing the discipline that sprawl exploits the absence of. The work starts the same way an audit does, by grouping tools by the job they do so overlap becomes visible, then ranking candidates for removal by cost against the disruption of cutting them. The difference between teams that stay lean and teams that bloat again is whether this becomes a habit or a one-time event.

• Tie reviews to renewals: every contract gets a justify-or-cut decision before it auto-renews, so the default flips from keep to question
• Track utilization, not ownership: measure active seats and last meaningful use, and treat a tool nobody touches as a cut candidate regardless of how useful it sounds
• Name an owner for subtraction: give someone explicit responsibility for removing tools, because nothing leaves a stack that nobody is accountable for removing
• Prefer consolidation to addition: when a new need appears, check whether an owned platform already covers it before buying another point tool

The leaner stack

A lean stack is not the one with the fewest logos for its own sake. It is the one where every tool has an owner, a job, and evidence it is used, and where the process makes it as easy to remove a tool as it was to add one. Sprawl is the natural state of a system that only rewards buying. The teams that escape it are the ones that made subtraction someone's actual job and tied it to the calendar, so the stack gets pruned on a schedule rather than only when the bill finally gets noticed.