The key points are: 1. Cloud computing allows users to access computing resources like servers, databases, and applications over the internet without maintaining physical infrastructure. 2. There are three main service models - SaaS, PaaS, and IaaS - that provide software, platforms, and infrastructure as a service. 3. Deployment models include public, private, community, and hybrid clouds that vary based on who has access to the cloud resources.

1. Presented By :
Gayathri Madhira

2.  Cloud is an metaphor for internet used here.
 Computing is an IT activity carried out.
 Customers do not have physical
infrastructure.
 Consume resources as a service and only pay
for those resources used.
 Information that a digitized system has to
offer is provided as service.

4.  Empowerment of end users.
 Resources are hosted by service provider on
behalf of entity.
 Data processed by resources is private to the
entity and its associates.
 It increases the speed of application
development.
 API accessibility to softwaresthat enables
machine to interact with cloud software.
 Cost is reduced.
 Device and location independence.
 Peak load capacity increases.

6. There are three fundamental service models :-
 SaaS
 PaaS
 IaaS

7.  Itprovides a software that is specific to end
users requirement.
 The host manages the software and
infrastructure runs the software and stores
data.
 Consumers cannot control software beyond
the usual configure settings .
 Host regularly back up all data.

8.  Itconsists of software development and
deployment platforms known as cloud
platforms.
 Host provides complete software
development and run time environment.
 Infrastructure include a database and
identity management or access control
software.

9.  It consists of hardware infrastructure located
in the cloud.
 It includes cloud storage,servers and
networks and is also known as hardware as a
service.
 It is used to run software or simply store
data.
 Consumers can be end users developers or
other cloud providers.

11. There are three types of deployment models:-
 Public cloud
 Private cloud
 Community cloud
 Hybrid cloud

12.  Public clouds are cloud systems that are
made available to any member of non
exclusive group.
 These services are or offered on a pay-per-
use model

13.  Private clouds are cloud systems that are
accessible by a single consumer or exclusive
group.
 It is also known as internal or corporate
clouds.
 These clouds are private because of the need
for system and data security.

14.  These are cloud systems that are available
only to a specific group of entities which
share common purpose.
 These clouds are managed by community or
third party.
 It is neither private nor public as unlike
private it isn’t narrowly exclusive and unlike
public entities outside the community
although can benefit from the service but
cannot become consumers.

15.  It is a combination of two or more public
private and community clouds that are used
on day to day basis.
 It contains larger pool of resources that can
be made available to their consumers.
 It is also called “cloud of clouds”

17. It is divided into two sections:-
 Front end :- It is the side that client or
the computer user sees.
 Backend:- It is the cloud section of the
system

19.  Itis a database that runs on cloud computing
platform.
 There are two primary methods to run a
database n cloud:-
 Virtual machine image:- cloud platforms
allow users to purchase virtual machine
instances for limited time it is possible to run
database on these virtual machines.

20. Database as a service :- Some cloud
platforms offer options for using a database
as a service, without physically launching a
virtual machine instance for the database.
In this configuration, application owners do
not have to install and maintain the
database on their own. Instead, the
database service provider takes
responsibility for installing and maintaining
the database, and application owners pay
according to their usage

21.  Reduced costs:- Cloud services paid for on a
usage basis can be financially advantageous
for a consumer when compared to the
outright purchase, or long-term rental, of
what would be a big-budget item.
 Up-to-date software:- SaaS consumers can
always have the most up-to-date
software, because versioning is controlled
centrally by the cloud provider, and when
they make a new release it is automatically
available to every user.

22.  Improved access:- Cloud computing involves
using the Internet, and this can provide
access from multiple locations and many
different types of user device.
 Sharing and co-operation:- Cloud services are
advantageous, when compared to PCs and
local servers, for activities that require co-
operation among distributed groups.

23.  Privacy and security:- Since data is stored on a
cloud provider's systems, and possibly in a
location that may not be known by the
consumer, there can be data-privacy and security
issues.
 Regulatory and customer requirements:- There
are some issues that may prevent the use of
cloud services.
 Service-provider outages:- Any accidental
downtime, or outage, of cloud systems can
affect some or all of the provider’s tenants, and
so this can deprive many users of access to their
IT systems.

24. Thank you