LEDs are quite robust and are built with durable components that are extremely rugged and can withstand harsh conditions. Due to the fact they are shock resistant and can withstand vibrations and external impacts, they make a good option for outdoor lighting.
This means in addition to already having a substantially long lifespan , LED Lighting fixtures themselves are also guaranteed to withstand the test of time. Need little to no maintenance when compared to traditional forms of lighting.
Thus saving time, effort , man power and cost associated with constantly having to change out and repair lighting fixtures.