Lesson Four, Cloud Computing Hosting. Cloud services can be simple as software products remotely hosted on cloud providers hardware. The service involves the option of cloud computing making use of virtualization. Cloud options can be either Private, Public, or Hybrid. We've discussed this. In either case, the Cloud uses one or more virtual machines to execute the software product. Delivery of the software services is delivered either by a public, private, or virtual private network. And Edge Computing, Edge Computing is a variation of cloud computing. Edge Computing is where the computing services including processing and storage are brought physically closer to the customer. This allows faster network response. Edge computings origins come from content delivery of large data files, including audio and video. The delivery of this type of data needs to be close to the users as it is subject to a high degree of latency. As Edge technology advanced it moved into running software applications to keep latency low. Edge computing is very popular in gaming and the Internet-of-Things as responsiveness is very, very critical. Healthcare is another important Edge computing use case. Fast data processing and network responsiveness is critical in healthcare use cases. As we can see here, the data center Internet of Things make this type of alignment, make for a much faster type of response and much more efficient delivery of the Computing Services. And we can see here that Edge nodes can be used that are very close to the users that allow for that high-speed storage, caching, and response. So whether this is for IoT or for healthcare, because healthcare does make use of Internet of Things quite a bit. As we know, the devices in The Internet of Things are quite often very small devices that don't have a lot of storage. Therefore, Edge Computing provides that type of responsiveness that you could not get with typical cloud computing.