Cirrus clouds are thin, wispy clouds found high in the sky, while cumulus clouds are thick, puffy clouds that can bring rain. The document discusses different types of cloud computing including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). It compares major cloud providers like Amazon AWS, Microsoft Azure, and Google Cloud on their IaaS, PaaS and SaaS offerings.