IaaS gives you the same physical infrastructure you’d have in your own data center, except that it isn’t in your own data center, you can add to it on demand, and you pay only for what you use. You retain almost all control over the physical or virtual server and its operating system and applications, while the vendor provides support for the infrastructure.
That means when you adopt IaaS, you need to think through many of the same technical questions you would think through if you were bringing new infrastructure into your own data center. Be sure you think through all the areas impacted by the switch to IaaS:
You can’t walk over to a console and access devices directly, so network performance is important for infrastructure monitoring and management as well as production applications. Be sure you understand how to secure your network connectivity, as there’s no more intranet; by default, all your access is over the public internet. Your IaaS provider may limit your access to equipment such as firewalls.
Along with these technical issues, you should also think through the non-technical issues such as pricing, discounts, and contracts. Make a plan for how your team will come up to speed and work in the new environment.