This subdomain is used to keep track of page visits to https://www.jaybosamiya.com/. In order to better protect your privacy, this is an entirely self-hosted analytics platform, rather than the "standard" practice of using Google Analytics, which sends a lot of data over to Google.
If you are worried about privacy, I recommend uBlock Origin, which not only blocks ads, but also blocks tracking and analytics code (including but not limited to Google Analytics and Matomo, that is used on this website). I personally use it, and highly recommend its usage.