3:: Three-Four-Five (3-4-5) Rule

What Cloud has to offer you can be incorporated in 3-4-5 Rule

3 : Services
4 : Deployment Models
5 : Characteristics

3: There are three services which are being provided by Cloud
4: 4 ways to deploy the cloud
5: What makes cloud different from other models can be proved based on FIVE characterizations.

3 : Services
1. IaaS (Infrastructure as a Service):
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, deployed applications, and possibly limited control of select networking components (e.g., host firewalls)

2. PaaS (Platform as a Service):

The capability provided to the consumer is to deploy onto the cloud infrastructure consumercreated

or acquired applications created using programming languages and tools supported by

the provider. The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, or storage, but has control over the deployed applications and

possibly application hosting environment configurations

3. SaaS(Software as a Service):

The capability provided to the consumer is to use the provider's applications running on a cloud infrastructure. The applications are accessible from various client devices through a thin client interface such

as a web browser (e.g., webbased

email). The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, storage, or even individual

application capabilities, with the possible exception of limited userspecific

application configuration settings

Detail view of SAAS,IAAS,PAAS

4 : Deployment Models(Four)

Private Cloud

Community Cloud

Public Cloud

Hybrid Cloud

1) Private Cloud (Single Org)

The cloud infrastructure is operated solely for a single organization. It may be managed by the

organization or a third party, and may exist on-premises or off-premises

Also called as “Enterprise Cloud”

2)Community Cloud (Multiple Org)

 The cloud infrastructure is shared by several organizations and supports a specific community

that has shared concerns (e.g., mission, security requirements, policy, or compliance

considerations).

 It may be managed by the organizations or a third party and may exist on-premises or offpremises.

3)Public Cloud (For Public)

 The cloud infrastructure is made available to the general public or a large industry group and is

owned by an organization selling cloud services

 Also called as “Internet Cloud”

4) Hybrid Cloud

The cloud infrastructure is a composition of two or more clouds (private, community, or public)

Leasing public cloud services when private cloud capacity is insufficient

Also called as “Mixed Cloud”

Cloud-bursting?

A hybrid cloud takes shape when a private cloud is supplemented with

computing capacity from public clouds

The approach of temporarily renting capacity to handle spikes in load

is known as “Cloud-bursting”

5: Characteristics(FIVE)

1.On-demand self-service:

•Users can provision servers and networks with little human intervention

2.Broad network access:

•Any computing capabilities are available over the network. Many different devices are allowed access through standardized mechanisms

3.Resource pooling:

•Multiple users can access clouds that serve other consumers according to demand.

•Cloud services need to share resources between users and clients in order to reduce costs

4.Elasticity:

•Provisioning is rapid and scales out or in based on need

5.Metered or measured service:

•One of the compelling business use cases for cloud computing is the ability to "pay as you go“, where the consumer pays only for the resources that are

actually used by his applications