LESSON 2: Storage and Retrieval of information in the Cloud

What we saw in class that day was Cloud Storage. Cloud computing allows us to access a wide range of possibilities that the Internet provides us, such as storage, content creation, blogs, social networks, etc. This is a shared service that requires us to have internet connection, and once we have it, we can use it whenever we need it. We distinguish between different types of clouds: 

 

·      A Public Cloud is maintained and managed by third parties not related to the organization. In this type of cloud, data and processes from multiple clients are mixed in serves, storage systems and other cloud infrastructures. 

·      A Private Clouds are a good option for companies that need high data protection and service-level issues. Private clouds are on-demand infrastructure, managed for a single client that controls which applications should run where.

·      A Hybrid Clouds combine public and private cloud models. A user owns some parts and shares others, albeit in a controlled way. Hybrid clouds offer the promise of scaling, externally provisioned, on-demand, but add the complexity of determining how to deploy applications across these dofferent enviroments.

Furthermore, we learnt about the three different types of delivery models of cloud computing: Software as a Service (SAAS), platform as a Service (PAAS) and internet as a Service (IAAS):

 -       SAAS: To use it you do not need to install software, it is accessible via web browser, you can access it from anywhere, it is available for multiple end users and it is excellent for collaborative work. Some examples are Drive, Office 365, etc.

-       PAAS: allows people to create and distribure their own applications. It is especially conceived for software developers (Play Store, Google Play, Windows, Azure, etc)

-       IAAS: offers users highly flexible IT infrastructure in a virtual environment. GoGrid and Amazon EC2 are some examples. 

    Finally, to finish the class what we had to do was practice that consisted of sharing a drive folder from the email with our coworkers so that all members of the group could modify or add more information.