Sitting near a sanctioned thing is not the same as being it. That sentence is the whole of adjacency screening, and the reason so much of the market gets it wrong is that treating the two as equivalent is faster, cheaper, and looks the same on a dashboard. Teaching a system to insist on the difference is slow work with almost no visible product, which is why almost nobody bothers.
So a big part of the system is the part that does the unmatching. It looks at dates, places, identifiers, who someone has shown up with before, what shape their life has online. None of those fields on their own are enough. The work is in how they line up.
We started building this because the off-the-shelf tools either return too much or too little, and the part in the middle, the part that actually answers the question, is left to whoever reads the report. That part shouldn't be manual every time, and most of our research has been about making it not have to be.
The other thing we keep learning is that sitting near something is not the same as being it. Two people in the same building, two companies in the same registry filing, two names in the same old article. The system has to hold that distinction without flattening it, and that is mostly a software problem, not a data problem.
a match is a question; the work is what answers it, and most of that work is the system underneath, not the line at the top.
A name match is not the same as exposure. Most of the operational work in a sanctions programme is teaching the system to tell the difference between a subject who happens to share a name with a listed party, a subject who sits adjacent to one, and a subject who is one. Each of those calls for a different response, and confusing them costs relationships in one direction and misses risk in the other.
The broader takeaway is that a match, in any screening context, is a starting point rather than a conclusion. The interesting engineering is the layer above the match, where identity, ownership, and control get resolved to a confidence a human can act on.