In this video, you will learn to describe what is meant by availability in the context of the CIA triad. The last one it's for availability. Availability means, and actually we deal with availability every day, it means that any data should be available always when it's needed. So a clear example of a lack of availability is, do not have any kind of backups for our data for our systems. So what happens when a cyber attack for example occurs and somebody download ransomware in our network and all the data from our computers, from our servers are erased or are encrypted? Well, the easiest thing to do actually is go to our backup and restore the data using the last available backup available or using the last backup that we have on our system, and restore everything, and continue our life, continue our work as nothing happened. But in some occasions, these processes storing a backup or generating backups, it's something that is none neccesarilly common in most of the enterprises. So some technical implementation that we could use to implement or add availability in our systems are rates. Rates are like this arrangement. These technologies use something that for example will allow us to keep or to install two, three, four, even naturally handle thousands of hard drives in our servers in our systems, to backup or to add redundancy into our servers for our data. So for example, if we have four different drives in our file server, and OneDrive goes down because a mechanical part broken, well, it doesn't matter, we have three different drives that has the same information and we could maintain the access to our data. Clusters are technology that allow us to maintain a different set of servers working as one. So it's something similar as rates, but on clusters we're not the only with hard drives, we're dealing with servers. ISP redundancy obviously something important or what happens if we only have one Internet connection to our company and something happened and that Internet connection goes down, well, such important is in these days when we are using a lot of things on Cloud, probably it's a good idea to have an ex or a second ISP to have Internet in our company. Obviously backups, we already talked about backups and are the important things that we need to keep in mind as soon as we work with backups and restore data.