I&#x27;m closely involved with CFEngine (I work on CFEngine full-time); from what I see, CFEngine 2 market share is shrinking (though still quite large even though CFEngine 2 isn&#x27;t &quot;cool&quot; and much talked about) and CFEngine 3 market share is growing (I help new users get started and there&#x27;s been an uptick in demand for training).<p>Overall, CFEngine&#x27;s share of the configuration management pie has shrunk compared to ten years ago but it&#x27;s still a contender, especially in environments where low infrastructure footprint (CFEngine uses very little resources when it runs, and it is viable to use it on embedded devices - Internet of Things anybody?), scalability (5K hosts on one hub without breaking a sweat) and security (NVD shows a strong security track record for CFEngine: <a href="https:&#x2F;&#x2F;web.nvd.nist.gov&#x2F;view&#x2F;vuln&#x2F;search" rel="nofollow">https:&#x2F;&#x2F;web.nvd.nist.gov&#x2F;view&#x2F;vuln&#x2F;search</a>) matter.