There’s a fairly popular belief going around that cloud services are somehow flawless and that these services never experience any outages. However, over and over again, we see news of outages in cloud services in the real world. Just recently, there was an outage in one of the US regions of AWS which affected both smaller and bigger players around the world, from Amazon’s own services to dating apps, security systems, and robots who all need cloud services to function. The last big outage before this happened to Fastly, which crippled a huge part of the internet, but nearly all large and small cloud service providers have experienced similar outages.Does this mean that cloud services are not reliable?

There are three main reasons why online services and online stores cannot manage sudden traffic spikes.