API Gateway versus direct service calls, when should you use each one?

hey every1 ive been thinkin alot bout how we structure our microservices communication. when were designin new features, we often have the choice between havin clients call services directly or routin traffic thru an api gateway. each approach has its pros and cons. direct calls can be simpler initially and reduce latency, but managin authentication, rate limitin, and request aggregation across many services gets messy fast. an api gateway centralizes these concerns, but adds another hop and a potential single point of failure. wat are ur thoughts? when do u find urselfs reachin for an api gateway, and when are direct service-to-service calls the better option