Every now and then someone on your team casually mentions something in passing and you realize two things at once. One, they know their craft. Two, there is a quiet story of problem solving underneath that most people will never see.
That happened recently when one of my team members brought up using an application shim to get testing software working again at the college.
For those unfamiliar, application shims are a Microsoft-supported compatibility capability built into Windows. They sit between an application and the operating system and subtly adjust how Windows responds to that application. No code changes. No vendor rewrite. Just controlled compatibility.
In our case, we had a testing application that worked perfectly fine in the past. After OS updates and security hardening, it suddenly did not. Nothing malicious. Nothing exotic. It simply expected behaviors from Windows that no longer existed.
Instead of rolling back the OS, weakening security, or rushing into an emergency replacement, we used a shim to address the specific compatibility issue. The result was simple. The testing software worked. Students were not disrupted. Faculty stayed on schedule. Security posture remained intact.
That is the real value here. Not the technical trick, but the outcome.
Application shims are used all over enterprise environments, often without anyone realizing it. Microsoft itself ships Windows with thousands of built-in shims so older applications continue to run across versions. Government agencies use them for legacy systems that cannot be replaced overnight. Higher education uses them when academic calendars do not allow for “just wait six months.” Healthcare and manufacturing rely on them to keep specialized software operational while modernization plans are in motion.
That said, shims are not magic and they are not free.
They are intentional technical debt. They should be documented, scoped, and tracked. A shim should buy you time, not become the plan. If you are stacking shims to keep an application alive year after year, that is not ingenuity anymore. That is a signal.
From a leadership perspective, I actually like hearing my team bring these tools up. It tells me they understand the platform deeply. It also tells me where lifecycle conversations need to happen upstream, with vendors, budgets, and roadmaps.
Sometimes IT fixes problems by building something new. Sometimes it fixes problems by replacing something old. And sometimes it fixes problems by understanding the system well enough to make it behave, just long enough, for everyone else to succeed.
Those quiet solutions rarely get applause. But they keep institutions moving.
And that matters.
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