An organization is concerned that one of their applications takes too long to return a result. According to Google's 揊our Golden Signals,?which signal measures this aspect of the application's perform

Saturation measures how full or overloaded a resource is, such as CPU or memory utilization approaching capacity limits.

Errors measure the rate at which requests fail, such as HTTP 5xx responses, not response time.

Latency specifically measures the time elapsed between a client making a request and receiving a response, directly corresponding to an application 'taking too long to return a result.' Google's Four Golden Signals framework - Latency, Traffic, Errors, and Saturation - defines latency as a primary indicator of user-facing performance and distinguishes between successful and failed request latency.

Traffic measures the demand placed on the system, such as requests per second, not how fast the system responds.