The document discusses different cloud topologies including public, private, and hybrid clouds. It describes the key features of each: public clouds are managed by third parties and users pay for resources used; private clouds are managed and owned by the user and offer more security; hybrid clouds combine aspects of public and private clouds. The document also outlines different cloud access models including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides on-demand access to infrastructure resources, PaaS provides development platforms, and SaaS provides fully-functional web applications.

1. Electronics paper 2
Wireless Communication and Internet of
Things
-Mrs. Vandana Pagar,
Assistant Professor,
Dept. of Electronics,
MIT ACSC Alandi

2. Cloud Topologies
Types of Cloud:
➢Public Cloud
➢Private Cloud
➢Hybrid Cloud

3. Cloud Topologies:
1.Public Cloud
 Third party own and manages the infrastructure
 User pay only for consumed resources.
Features of public cloud
i. High Scalability
ii. Pay as you use
iii. Cost effective
iv. Easy deployment
v. Reliable
vi. Continuous Uptime
vii. Zero Maintenance

4. Cloud Topologies:
2.Private Cloud
 Types of Private Cloud
1. Dedicated private Cloud:
➢ Hardware is placed at data center.
➢ Managed and owned by the user
➢ Used for large organizations
1. Managed private Cloud:
➢ Hardware managed by third Party
➢ Installed at external location

5. Cloud Topologies:
1.Private Cloud
Features of Private Cloud:
➢ Most secure
➢ Good performance
➢ High reliability
➢ Less Risky
➢ Efficient

6. Cloud Topologies:
3.Hybrid Cloud
 It is a combination of public and private clouds
 It combines control and security of private
cloud and cost saving advantages of public
cloud.
 It uses public cloud for non critical information
and private for sensitive data.

7. Cloud Topologies:
3.Hybrid Cloud
 Features of Hybrid Cloud
 High Scalability
 Very Secure
 Improved Cost
 High Reliability
 Easy transition

8. Cloud Access
Cloud based service can be utilized and consumed in
different ways:
 Services models in the cloud
1. Infrastructure as a service(IaaS)
2. Platform as a Service (PaaS)
3. Software as a Service (Saas)

9. Cloud Access

10. Infrastructure as a service(IaaS)

11. Infrastructure as a service(IaaS)
 Outsourcing of infrastructure such
as storage, networking,load
balancers and virtualization.
 User is responsible to maintain,
update the OS
,install required applications.
 POOLING of storage and
computing resources allow with
easy and quick scaling.
 e,.g. Amazon EC2 and S3, Google

12. Platform as a Service:
 Along with infrastructure also issue on demand environment to
develop test and run and collaborate with components such as web
services, database management system and software development
kits.
 Security, load balncers , network topology and infrastructure are
managed by the cloud provider.
 Advantage: User need not to manage operating system, running
updates or updating the hardware.It is handled by cloud provider.
 e,.g. AWS, Elastic, Beanstalk, Heroku, Google app engine

13. Software as Service:
 Fully functional web based application
softwares.
 Saas providers is responsible to supervise
everything which includes firewall,load
balncers and infrastructure.
 Runtime environment land OS loke Java
and .NET, business applications and even
mails are handled by provider
 Advantage: It does not need much
investment