Identity
Three logo directions
Each is real SVG, not a sketch — shown as the bare mark, as a lockup with the name, at favicon sizes, and on dark and sky grounds. A mark that dies at 16px is not usable, because the favicon is the most-seen instance of it.
A — Signal A
An app-tile monogram. The A’s crossbar overshoots the right stroke, so the letter reads as a transmission rather than a letter. Most conventional of the three; safest, least distinctive.
B — Cloud & pulse RECOMMENDED
A cloud with a single heartbeat cut through it. Cloud = the servers you actually run; pulse = real-time, and “systems that stay up”. It also rhymes with the cloud layers the site is built from, so the identity and the interface are the same idea.
C — Offset square
One primitive, one deviation: a square with a quadrant displaced along the diagonal. Reads as an apex, a packet in transit, and a diff. The most restrained — and the least connected to the playful direction you chose.