="#summary">#</a>
</h2>
<p>This article concludes the description of the implementation of the
fraud detection engine that we started in <a href="/news/2020/01/15/demo-fraud-detection.html">part one</a>. In this blog
post we demonstrated how <code>ProcessFunction</code> can be utilized to
&quot;impersonate&quot; a window with a sophisticated custom logic. We have
discussed the pros and cons of such approach and elaborated how custom
use-case-specific optimizations can be applied - something that would
not b