The tool accumulation problem
Marketing technology has been one of the fastest-growing software categories for the past decade. Every new platform, every new channel, every new capability comes with a tool or three to support it. Chief Martec's annual landscape has tracked this growth from under 200 solutions in 2011 to nearly 10,000 today. Teams add tools when they start a new initiative and rarely remove them when the initiative ends. Vendors offer free trials and the tools accumulate. Integrations get promised and then half-built. Data sits in silos that no single person understands completely.
The result, in most marketing teams of any size, is a stack that has grown organically, without a governing architecture, and now costs more than it should, integrates worse than it looks on paper, and is understood by fewer people than anyone would like to admit.
This was always a problem. In 2024, with budgets tightening and finance teams asking harder questions about technology spend, it has become an urgent one. A stack audit, a structured review of every tool, what it does, what it costs, and how well it integrates, is one of the most valuable things a marketing team can do before their next budget cycle.
Why most teams avoid it
Stack audits get avoided for a few reasons. The most common is that nobody is quite sure who owns the process. The CRM might sit with sales operations. The analytics platform might be jointly owned with the data team. The content management tools might be maintained by people who have since left the company. The complexity of working out who owns what feels like too much to untangle.
There is also a political dimension. Every tool in a stack has a champion, someone who pushed for its adoption and who may take a review as a personal affront. Recommending the consolidation or removal of tools requires navigating those relationships carefully.
Both of these obstacles are real, but they are not reasons to skip the exercise. They are reasons to structure it carefully.
Most martech stacks have grown into their complexity one sensible decision at a time. Auditing them requires stepping back from individual decisions and looking at the whole.
A practical audit framework
Start by building a complete inventory. Every tool that touches marketing data or marketing workflow should be on the list, including tools that are technically owned by another team but that marketing depends on. Include the contract renewal date, the monthly or annual cost, and the name of the internal owner.
Once you have the inventory, evaluate each tool against three questions. First: is this tool actually being used? Not theoretically, actually. Pull login data or usage reports if you can. A surprising number of tools in most stacks are paid for and barely touched. Second: is this tool's function duplicated elsewhere in the stack? Overlap is extremely common, teams often have two or three tools with overlapping data capture, reporting, or automation capabilities. Third: does this tool integrate cleanly with the other tools it is supposed to work with? Integration promises made during procurement rarely survive contact with reality. Find out what is actually connected versus what is connected on paper.
The four categories every tool falls into
After you have answered those three questions for each tool, you can sort your stack into four buckets.
Keep and invest: tools that are actively used, serve a unique function, integrate cleanly, and support a current strategic priority. These deserve attention and resource to be used well.
Keep and fix: tools that serve a necessary function but are under-used, poorly integrated, or not configured properly. These are not candidates for removal, but they need work. Under-used tools in a well-structured stack are usually a training or configuration problem, not a purchasing problem.
Replace: tools where the function is genuinely needed, but this specific tool is the wrong fit, too expensive, too complex, too poorly integrated, or superseded by something better. Replacement requires planning, data migration, and change management, so this category should be small.
Remove: tools that duplicate a function covered better elsewhere, serve an initiative that no longer exists, or are not being used by anyone. These are the easiest wins. Removing them reduces cost, reduces complexity, and reduces the number of data silos your team has to manage.
What to do with the results
A stack audit produces two outputs. The first is a near-term action list: tools to cancel, tools to configure properly, integrations to build or fix. Most of this can be executed within a quarter. The second is a reference architecture, a picture of what a clean, well-integrated stack should look like for your team's current priorities. This does not have to be elaborate, but it is useful to have so that future tool decisions are made against a governing picture rather than in isolation.
The reference architecture should answer three questions: what data needs to flow where, what are the core workflow needs across the team, and which tools handle which functions? With that document in hand, the next time a vendor pitches you a new tool, you can evaluate it against the architecture rather than just against the demo.
A leaner stack is a more capable one
Counter-intuitively, teams with smaller, well-integrated stacks tend to get more out of their technology than teams with large, sprawling ones. The integrations actually work. Data flows to where it needs to go. Team members can use the tools they have well rather than being confused by the sheer number of systems they are supposed to manage. The discipline of the audit pays dividends that compound long after the exercise is complete.