IaaS is perhaps the least understood cloud computing service model. Our 7DEE lecture today should finally dispel any confusion surrounding it.
Software-as-a-service is -- or should be -- familiar to everyone. This is software on a cloud platform, accessible to users via a Web browser or just a smartphone. When, as individual consumers, we use Google Maps, or Hotmail, or Dropbox, we're really using SaaS.
Platform-as-a-service offers opportunities for enterprises to deploy either custom-built or off-the-peg software on a cloud platform. PaaS clients control software, but not networks, operating systems, or storage within the cloud infrastructure.
Where does that leave infrastructure-as-a-service? Let's take a look at the NIST definition:
The capability provided to the consumer is to provision processing, storage, networks, and other fundamental computing resources where the consumer is able to deploy and run arbitrary software, which can include operating systems and applications. The consumer does not manage or control the underlying cloud infrastructure but has control over operating systems, storage, and deployed applications; and possibly limited control of select networking components (e.g., host firewalls).
That seems clear enough, but where are the benefits? Why subscribe to IaaS rather than run your own datacenter? How much of a headache is IaaS going to be for your already over-stretched IT department?
We'll be looking at benefits and concerns arising from enterprise IaaS adoption in today's program, with lecturer H. Randy Cochran. Randy is founder and principal IT architect for Data Center Enhancements Inc., with years of experience in big-data storage and related infrastructure. You can follow his blog at BigDataChallenges.com.
Join us at 2:00 p.m. ET today, and also on Thursday for the concluding lecture in the current 7DEE series, on where the cloud is taking us.
— Kim Davis , Community Editor, Internet Evolution