Types Of Cloud Services

Cloud computing services are categories mainly three types as below:

1. SAAS - Software as a services
2. PAAS - Platform as a services
3. IAAS - Infrastructure as a services

As in the above picture you can see end use can hit only SAAS model and internally SAAS hit to PAAS and IAAS.

 1. SAAS (Software as a services):

• SASS services = SAAS + PASS + IAAS
• This services is just start using the software after getting the license or free one just need to register and start using.
• Generally software companies buy PASS environments then host their software and start selling the software as SAAS model.
• End user use the software thought internet or VPN connection.
• Most of the customer sell SAAS on daily ,monthly,quarterly or yearly plan based on the data usage.
• Common SAAS model software are gmail,CRM and accounting software, if you need CRM or accounting software just start paying on plan and start using the software.
• SaaS is closely related to the application service provider (ASP) and on demand computing software delivery models.

 2. PAAS (Platform as a services):

• PASS services = PASS + IAAS
• This include operating system, database ,web server and development tools.
• This provide the infrastructure to host the applications in web server and development environment to build the applications in other word this is complete development and deployment environment. 
• This service is mostly used by IT engineers.

 3. IAAS (Infrastructure as a services):

• IASS is purely hardware environment and this includes virtual machine,storage, load balancing and networking.
• This can quickly scales up and down on demand.

4. Other cloud services:

I. FAAS (Function as service) : This follow the serverless architecture.
II. Communications As A Service (CAAS)
III. Network As A Service (NAAS)
IV. Monitoring As A Service (MAAS)