stratum

In networking, "stratum" refers to the level or layer of time servers that synchronize clocks across the internet, especially for systems like GPS or financial transactions. A lower stratum number indicates a more accurate and primary source, such as an atomic clock, while higher numbers represent servers that synchronize their time from lower-stratum servers. Think of it like a hierarchy: stratum 0 is the most precise source, and as the number increases, the clock's accuracy depends on the higher-level servers it connects to. This layered approach ensures consistent and reliable timekeeping across networks.