The process of auditing a martech stack to identify redundant, underused, or misaligned tools and deciding what to keep, consolidate, replace, or retire.
Rationalization sounds like a polite word for cutting. That’s the first mistake most organizations make with the exercise.
The cost-cutting trap
When finance drives rationalization, the exercise starts with a spreadsheet of tools and their contract values. The team cuts anything that looks redundant or underused, celebrates the savings, and watches productivity drop three months later when someone discovers the “redundant” tool was the only one that handled a workflow nobody documented.
Effective rationalization starts with workflows, not licenses. Map what people do, which tools they touch to do it, and where handoffs break. Redundancy looks different when you understand that two teams bought the same category of tool because the first one couldn’t serve both use cases.
Architecture before arithmetic
The better frame is fit. Does each tool serve a clear function in the stack architecture? Does it connect to the tools upstream and downstream from it? Is the data flowing where it needs to go, or is someone exporting CSVs to bridge a gap?
Some organizations discover they need more tools after rationalization, not fewer. Retiring three overlapping point solutions and replacing them with one platform that actually integrates might cost more in licensing but save hundreds of hours in manual workarounds.
The goal isn’t a smaller stack. The goal is a stack where every tool earns its place and nothing critical depends on a person remembering to copy data between systems.