<https://pt.coursera.org/lecture/cybersecurity-roles-processes-operating-system-security/virtualization-to-cloud-HdjLr#lecture>
<http://schema.org/transcript>
"In this video, you will learn to describe moving beyond virtualization to a cloud environment, and describe the steps to deployment in a cloud environment. Welcome. I'm going to talk to you about an overview of key security tools. Particularly, about virtualization and cloud. So how is it that we jumped from having virtualized environments to this whole cloud systems? We need to talk about first, what virtualization is. So virtualization allows you to run software resources with less physical resources. So for example, you can have a server, a physical server, that is running different virtual machines within that server. So that makes you have different environments within or running just a few physical resources. Now, what if we put together several virtualized resources? That's one of the questions that people asked a few years ago when this whole cloud thing started. So you jump from a virtualization management, then the whole service delivery automation needed to happen. That align to business service catalogs. You cannot build a virtualized environment without knowing what you're going to use it for. So once you have that business goals you want to achieve, then you can implement this model into your business needs or to fulfill your business needs. Then, we had an end-to-end, real-time monitoring and optimization, and consumption-based marrying and dynamic capacity optimization. So this is just a chart that tell us how is it that we jump from this virtualized environment to have this whole cloud environments. We jumped from having single resources and single virtual resources, to have a whole level of interacting devices fulfilling our service need. Now, let's talk about a cloud deployment and how it looks like. In the previous slide, we talked about how we jumped from having just virtualized environments to a whole cloud providing services. Now, in order to understand how a cloud deployment looks like, and you can guide yourself with this chart in the slide, you have three steps you need to follow. Several interim steps within those steps. So you need to first, to consolidate the operation you have. With consolidation, we mean. What is it that you want to move to the cloud? What is it that you want to serve and what services you need there? Then you need to virtualize that list of items that you did in step one. You need to virtualize those, then you need to have resources to do the whole virtualization. Step two, you need to automate that. By automation, we mean like the services and the items you're going to use to manage those items you consolidate in step one. Once you have all the structure, and how are you going to manage this, then you're going to start moving to cloud. Within the cloud, you're going to integrate and optimize it, because you need to measure how it's behaving and how it's performing. You need to make sure that the business needs are integrated to the cloud and the services you're providing actually fulfilling what do you want for the business, and of course, the optimization. You need to make sure that the resources that you have in place are actually working for what you want. If what you want is just an email, a cloud email solution, then you don't need 100 servers, you don't need to have it co-located on different places. This point is where you need to do some sizing exercise so you can optimize your resource and understand if what you have currently and what you've built currently it's enough or if at the future you'll need more resources to keep growing. That is something you will only know by knowing your business and to know what is it that you want to achieve with cloud computing."
<https://pt.coursera.org/lecture/cybersecurity-roles-processes-operating-system-security/virtualization-to-cloud-HdjLr>