Definition
The event name is the first positional argument in most analytics SDKs: `posthog.capture('checkout_completed', ...)`, `mixpanel.track('signup', ...)`. Dashboards group occurrences by exact string match, so `checkout_completed` and `checkoutCompleted` are different events even when they describe the same user action.
Common conventions
Most teams pick one casing convention (snake_case is the most common) and stick to it. A few teams use `Object Verb` casing (Segment's recommendation). The choice matters less than consistency. Renames after the fact split funnels.
