This time we are going to focus on Amazon Web Services (AWS), we are going to see how we can, using an Iaas model, build a system from scratch that is ready to host our services and we will see in this way that either in the cloud or in our Datacenter, control is vital to our business.
Once created our account and initiated our access we will have before us perhaps too many options, Amazon contains abundant documentation about how to use its huge options and services. The first thing we must do is generate an instance, host our operating system, configure our "key pair" and customize the security settings.
Amazon Guide:
https://docs.aws.amazon.com/efs/latest/ug/whatisefs.html In our case we have chosen a Centos7 system, seeking to reproduce the environment of our old infrastructure. We enable a security configuration that allows the entry of certain IPS through the TCP protocol, as well as ICMP messages. Once our system is configured, we will add the most important elements needed by the characteristics of our service. This phase depends a lot on our preferences and the approach of our migration. For this example, several replicated instances have been generated and located in some of the different zones allowed by AWS. In this way, we try to make the most of the advantages of the cloud in the global network.
Recapitulating, after analyzing how positive it is for our business to move some element to the cloud and choose the right time to do it, we must ensure that we maintain the differentiating element of Cloud, the provision of infrastructure must be aligned to actual demand at all times. This must happen not only in the initial sizing, but must be dogmatic for our entire stay. This follow-up takes a large part of the advantages that Cloud offers us, and its importance outside this "virtualized" world is also well known.