This document discusses cloud computing concepts including definitions of cloud computing, cloud deployment models of private, public and hybrid clouds, and cloud service models of Infrastructure as a Service (IaaS), Platform as a Service (PaaS), serverless computing, and Software as a Service (SaaS). Cloud computing provides on-demand access to computing resources without direct management by the user. Deployment models include private clouds for a single organization, public clouds delivered over the internet, and hybrid clouds combining public and private. Service models range from IaaS providing basic computing resources to SaaS delivering full software applications.

1. AWS Training
Track - 1 -
Cloud Computing
A Techmozart - Arun Raj T.M. Presentation

2. What is Cloud
Computing?
• Wiki Definition - Cloud computing is the on-demand
availability of computer system resources, especially
data storage and computing power, without direct
active management by the user.
• What is it really? – Any Service, Infrastructure,
Platform, etc. that is provided to you as a service.
Meaning that you don’t have to worry about the
backend or maintenance of the same.
This Photo by Unknown Author is licensed under CC BY-SA
A Techmozart - Arun Raj T.M. Presentation

3. Cloud
Deployment
Models
Private Cloud – cloud infrastructure operated solely
for a single organization, whether managed internally
or by a third party, and hosted either internally or
externally. - More Secure – Maintenance and costs are
higher.
Public Cloud - Public clouds are owned and operated
by a third-party cloud service provider such as Amazon,
Microsoft, Google, etc. and are delivered over the
Internet. With a public cloud, all hardware, software
and other supporting infrastructure is owned and
managed by the cloud provider – Security may be lower
– Costs are lesser
Hybrid Cloud – t is a combination of public and
private clouds. This solves the issues of both – Best of
both worlds – secure and cost effective with design
A Techmozart - Arun Raj T.M. Presentation

4. Cloud Service
Models
Infrastructure as a service (IaaS) – servers or virtual
machines, storage, networks, operating systems—from a cloud
provider on a pay-as-you-go basis. Eg. - Virtual Machines on
VMware, eC2 instances on AWS.
Platform as a service (PaaS) - on-demand environment for
developing, testing, delivering and managing software
applications. Eg. - AWS Elastic Beanstalk, Google App Engine,
Apache Stratos.
Serverless computing– It overlaps its functionality with PaaS.
Serverless computing focuses on building app functionality
without backend. Eg. - AWS Lambda, Fauna DB Cloud.
Software as a service (SaaS) – Delivering software applications
over the Internet, on demand and typically on a subscription basis.
Eg. - Google Apps, Microsoft Office 365.
A Techmozart - Arun Raj T.M. Presentation