The document provides information about cloud computing and Windows Azure Service Bus. It defines cloud computing and its service models including Infrastructure as a Service, Platform as a Service, and Software as a Service. It then describes key benefits of cloud computing such as improved productivity, cost savings, scalability, speed, and mobility. The document proceeds to explain core features of Windows Azure Service Bus including namespaces, queues, topics, subscriptions, and relays. It discusses messaging scenarios such as temporal decoupling, load leveling, load balancing, and publish/subscribe. It encourages using Windows Azure Service Bus and provides a conclusion about messaging.

1. + 20th of April 2013.
Elena Naum.
+ Levi9 - working for project Greenclouds.
Today’s presenter.

2. + Why use it?
Today’s topics:
+ What’s Cloud Computing?
+ How does one get in the Cloud?
An Introduction to Cloud Computing.

3. Some definitions:
“A self-service environment for the creation of highly-scalable
applications, with the immediate availability of compute power and
granular levels of billing.” - A taxonomy of the Amazon Cloud
What is Cloud Computing?
“The use of computing resources (hardware and software) that are
delivered as a service over a network (typically the Internet). The
name comes from the use of a cloud-shaped symbol as an
abstraction for the complex infrastructure it contains in system
diagrams.” - Wikipedia
“The practice of using a network of remote servers hosted on the
Internet to store, manage, and process data, rather than a local
server or a personal computer.” - Oxford American Dictionary

4. Some definitions:
“A self-service environment for the creation of highly-scalable
applications, with the immediate availability of compute power and
granular levels of billing.” - A taxonomy of the Amazon Cloud
What is Cloud Computing?
“The use of computing resources (hardware and software) that are
delivered as a service over a network (typically the Internet). The
name comes from the use of a cloud-shaped symbol as an
abstraction for the complex infrastructure it contains in system
diagrams.” - Wikipedia
“The practice of using a network of remote servers hosted on the
Internet to store, manage, and process data, rather than a local
server or a personal computer.” - Oxford American Dictionary

5. Cloud Computing.

6. Infrastructure-as-a-
Service
Platform-as-a-Service Software-as-a-Service
Cloud Computing. Examples.

7. Key Benefits of Cloud Computing.
+ Improved productivity.
+ Cost savings.
+ Highly scalable.
+ Speed of response.
+ Easily access data.
+ Increase mobility.
+ Green.

9. Case studies

10. Join the Cloud:
+ http://blog.jointhecloud.org
+ http://www.cloudtweaks.com
References.
Platforms:
+ http://www.greencloudsonline.com
+ http://www.windowsazure.com

11. About Alin
Rock star .NET developer @ Levi9
facebook.com/alin.ruscior
ro.linkedin.com/in/alinruscior`

12. Service Bus is messaging infrastructure that
sits between applications allowing them to
exchange messages in a loosely coupled way
for improved scale and resiliency. Service Bus
is managed and operated by Microsoft with a
99.9% monthly SLA

13. Core Features

15. Way up in the cloudsNamespace =
Scoping container for
addressing Service
Bus resources within
your application
Queue = Sequential message
store that offers First In, First
Out (FIFO) message delivery
to one or more competing
consumers
Topic = Sequential message
store like a queue, but it
supports up to 2000
concurrent and durable
subscriptions, which relay
message copies to a poll of
worker processes. A topic
extends the messaging
features provided by queues
with the addition of publish-
subscribe capabilities
Relay = Cloud service which
provides bi-directional
communication. Unlike
queues and topics, a relay
doesn’t store in-flight
messages—it’s not a broker.
Instead, it just passes them
on to the destination
application
Subscription =
Resembles a virtual
queue that receives
copies of the messages
that were sent to the
topic

16. Topics are your friends

18. Scenarios
• Temporal decoupling
- Senders and receivers don’t need to be active simultaneously
• Load leveling
- Receiver processes messages at its own pace
• Load balancing
- Scale up number of receivers to handle load
• Pub/Sub – Multicasting
- Multiple subscriptions

20. So what are you waiting for?
http://www.windowsazure.com/en-us/downloads/

21. Conclusions
• Windows Azure Service Bus
• Messaging using Topics/Queues/Relays
• Key scenarios: Decoupling/Load leveling/Load
balancing/Multicasting
• aaaaaand

22. Play Halo 4