Cloud Computing Service Models

1. CLOUD COMPUTING
SERVICE AND
DEPLOYMENT MODELS

2. Overview
 This Lesson is about Cloud Computing and its several
models. This article will give you a general understanding of
the cloud environment and state its benefits in a today tech
world, where organizations compete with each other. As it is
totally a business model so it has given great advantages to
the small scale industries to efficiently expand their business.

3. Cloud Computing Service Models

4. Service Models
 1. SAAS: “SAAS” stands for software-as-a-service. This is just a
software distribution model in which the software is used by the end
users, which is hosted by the cloud providers over the centralized
cloud server. There are lots of software that are provided to the end
users in this fashion such as Gmail, Games, etc.

5. Service Models
 2. PAAS : “PAAS” stands for platform-as-a-service. As the name
itself reflects the idea that this model is providing some platforms.
This model is specifically used by developers to create, deploy and
manage the application. There are lots of cloud vendors that provide
these service such as Google Apps Engine(GAE), Windows Azure,
SalesForce.com are the examples of PAAS.

6. Service Models
 3. IAAS: “IAAS” stands for Infrastructure-as-service. As
virtualization is one of the important parts of cloud computing, so
based on that this model provides virtualized computing resources
to the end users via the Internet.
 Instead of purchasing hardware, users pay for IaaS on demand as
their virtual infrastructure.

7. Deployment Models
It works as your virtual computing environment with a choice of
deployment model depending on how much data you want to store and
who has access to the infrastructure.

8.  1. Public Cloud
As the name suggests, this type of cloud is generally hosted for the
client/ users which can access the cloud services very easily. The
public cloud is better suited under commercial purposes for load
management. This type of cloud is economical due to the very low
cost of their services. IBM, Google, Amazon, Microsoft, etc. are
examples of companies offering public cloud installations.
 2. Private Cloud
As the name suggests this type of cloud is generally hosted on the
enterprise’s premises. The idea of this type of cloud came into the
picture because many of the organization is having concerns
regarding security issues of the public cloud. So they came up with the
idea of a private cloud, which is under the control of only specific
executives. This type of cloud is also termed as corporate or internal.
Deployment Models

9.  3. Community Cloud
 This type of cloud is very much similar to the private
cloud, unlike private cloud this type of cloud is used and
maintained by the group of organization that requires
similar types of services.
 Since organizations have consistent security, privacy,
and performance requirements, this multi-tenant data
center architecture helps organizations achieve their
specific goals. A community model is therefore
particularly suitable for organizations working on joint
projects. In this case, a central cloud facilitates the
development, management, and implementation of the
project. In addition, all users share the costs.

10.  4. Hybrid Cloud
This type of cloud is simply the combination of two or more
cloud servers, i.e. private, public or community combined in
a single architecture, but which remains a single individual
unit. This configuration is commonly used by large
companies. Important data is generally preferred in a
private cloud and public domain support services, such as
search, email, blogs, CRM, etc.

11. Conclusion
Each cloud deployment model has a unique offering and
can immensely add value to your business. For small to
medium-sized businesses, a public cloud is an ideal
model to start with. And as your requirements change,
you can switch over to a different deployment model. An
effective strategy can be designed depending on your
needs using the above-mentioned cloud deployment
models.

12. Activity# 4?
 1. Make a Comparative Analysis Of Cloud Deployment Models using
the table below
 2, which do you think is the Right Choice For Cloud Deployment
Models