YOUR REQUEST'S JOURNEY

DNS is your device finding out where www.osom.link lives. CONNECT and TLS are the two handshakes with the nearest CloudFront edge; a reused connection skips both, which is why they are often zero. WAIT is from asking for the page to the first byte back: the edge checks its cache, and on a MISS it fetches the file from the S3 bucket in Dublin (eu-west-1). DOWNLOAD is the rest of the bytes. The first numbers are from this page loading; RUN IT AGAIN fetches the home page afresh and times that.

All of it is measured by your browser and none of it is stored or sent anywhere. The one exception is the live DNS lookup, which goes to Cloudflare's public resolver. Where you are is not measured: CloudFront sends you to an edge near you, so you are drawn beside it. The split of the wait between the edge and Dublin is illustrative — the browser only sees the total.