Cloud computing Models

  1. IAAS (Infrastructure as a code) ——→ this models gives you most control of cloud resource.

AWS responsible for physical security , hw , networking connection to internet .

customer responsible for installing os ,update os ,maintenance , network configuration ,patching ,data.

Hw on cloud data center , but what to do with this hw is up to you.

use cases ——→ lift && shift migration from on-permise to cloud


  1. Paas (platform as a service) —>

AWS responsible for physical security, hw, network connectivity to internet , os installation , db patches , os upgrade , run-time that developer need.

customer responsible for data only

Paas ——> middle ware between iaas and saas

use cases ———> provide platform for developer for developing or customize based on needs


Saas (software as a service) ———>

AWS responsible for physical security, hw, network connectivity to internet , os installation , db patches , os upgrade , run-time that developer need , app development .

customer —> just use app

Ex —> Gmail , financial apps , messaging app

use cases—→

  • Business productivity applications.

  • Finance and expense tracking.

  • Email messaging



Which cloud service type is most suited to a lift and shift migration from an on-premises datacenter to a cloud deployment?

Infrastructure as a Service (IaaS)

With an IaaS service type, you can approximate your on-premises environment, making a lift-and-shift transition to the cloud relatively straightforward.

Platform as a Service (PaaS)

Software as a Service (SaaS)

What type of cloud service type would a Finance and Expense tracking solution typically be in?

Infrastructure as a Service (IaaS)

Platform as a Service (PaaS)

Software as a Service (SaaS)