5. What is Cloud Computing?
• Infrastructure, applications, and business
processes can be delivered to you as a
service, over the Internet rather than a local
server
6. Service models
Cloud layers:
• Software as a Service (SaaS)
• Platform as a Service (PaaS)
• Infrastructure as a Service(IaaS)
7.
8. SaaS
• Delivers one application to many users
regardless of location
• Allows architecture, pricing, partnering, and
management characteristics to be managed from
one central location
10. Tips to get you started with SaaS
• Compare the up-front cost savings to long-term
subscription usage
• Look for the ability to customize or configure the
application for your environment
• Make sure a SaaS solution has all the features
you want
• Don’t focus solely on costs
• Make sure you own your data
12. PaaS
• Develop new applications that do not depend on
a specific platform to run
• Can support integration with legacy applications
• Can create multi-tenet applications
• Best for collaboration
13. Tips to get you started…
• Look for providers that help you develop more
custom web apps faster
• You can lease capacity
• Compare how well vendor tools enable
portability across clouds
15. IaaS
• Rent a data center capacity as needed
• Provides compute power, memory, and
storage, typically priced per hour based on
resource consumption
• No need to install new equipment or to wait for
the hardware procurement process
16. Tips to get you started…
• Weigh the impact to your IT organization before
adopting IaaS
• Create a strong internal team to manage your
security and compliance requirements with a chosen
cloud provider
• Make sure you have a thorough understanding of
how your current system works
• Plan an exit strategy
18. Challenges with the cloud
• Security and Privacy
• Service Quality
Case Study: Amazon Web Services
• Performance
• Integration
19. HBR article suggestions
• Ask vendors where and how the data would be
stored
• Ask how the vendors would guarantee the data's
availability
• Bring in specialists who are well versed in the
technical issues of cloud platforms to closely
read the service-level agreements offered by
vendors
20. HBR article suggestions
• Consider cloud-based processes along two
dimensions: operational dependence and risk
tolerance
21. Myths about the Cloud
• Going to the cloud is “green”
• Don’t have to worry about IT anymore
• Will never suffer downtime
• Save money
22. Choosing the right cloud for you
• Risk tolerance
• Payment options
• Public or Private?
23. When it may not be right for the cloud
• Sensitive data is best kept local. Sure you can use
encryption, but with any good security paradigm
you make it more difficult for hackers, bots and
yourself
• If your applications require specific hardware
components, or your application requires
complete access to the server, cloud computing
may not be a good fit
• Mission critical applications are not good
candidates for cloud computing
24. Using the cloud now?
• Amazon cloud player
• Google Drive
• Prezi
• Slide Rocket
• iCloud
• SharePoint
26. Future of the cloud
The global cloud computing market will grow
from a $40.7 billion in 2011 to $241 billion in
2020, according to Forrester Research.
27. Summary
Decide if the cloud is right for your business
1. Check security
2. Vendor
3. Risk Tolerance
4. Which tasks will be in the cloud
5. SLA’s
Implement the cloud or stick with existing
business model
28. Sources
S lide 7:Ludwig, S. (2011, November 14). Cloud 101: What the heck do IaaS, PaaS and SaaS. Retrieved
from http://venturebeat.com/2011/11/14/cloud-iaas-paas-saas/
Slide8&10:Cloud basics: Software as a service. (n.d.). Retrieved from
http://www.microsoft.com/industry/government/guides/cloud_computing/4-SaaS.aspx
Slide12&13:Cloud basics: Platform as a service. (n.d.). Retrieved from
http://www.microsoft.com/industry/government/guides/cloud_computing/5-PaaS.aspx
Slide 15& 16:Cloud basics: Infrastructure as a Service. (n.d.). Retrieved from
http://www.microsoft.com/industry/government/guides/cloud_computing/6-IaaS.aspx
Slide 18: Sreeklyer. (2011, November 27). DeveloperWorks: Cloud Computing Central. Retrieved from
https://www.ibm.com/developerworks/mydeveloperworks/blogs/c2028fdc-41fe-4493-8257-
33a59069fa04/entry/top_5_challenges_to_cloud_computing4?lang=en
Slide 19&20: Plant, R. (2011, June 21). Don't Get Stuck in the Cloud. Retrieved from
http://blogs.hbr.org/cs/2011/06/dont_get_stuck_in_the_cloud.html
Slide 21:Rodrigues, T. (2012, June 13). The five big myths of cloud computing. Retrieved from
http://www.techrepublic.com/blog/datacenter/the-five-big-myths-of-cloud-computing/5588
Slide 22: Lacey, C. (2010, April 28). Choosing The Right 'Cloud' For You. Retrieved from
http://www.forbes.com/2010/04/27/cloud-computing-virtualization-technology-cio-network-unisys.html
Slide 23: Menegaz, G. (2012, May 29). Cloud Computing: Is it right for you? Retrieved from
http://www.zdnet.com/blog/btl/cloud-computing-is-it-right-for-you/78185
Slide 26:Dignan, L. (2011, April 22). Cloud computing market: $241 billion in 2020. Retrieved from
http://www.zdnet.com/blog/btl/cloud-computing-market-241-billion-in-2020/47702
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Regardless of their location, rather than the traditional model of one application per desktop
For collaboratingCalled middle ware
The multi-tenant architecture of PaaS offerings often comes with concurrency management, scalability, failover, and security so that you can think big when testing and developing software.For example, some PaaS environments help geographically dispersed teams collaborate and share code or include services for creating data models and policies visually.4)Do they support application interactions and provide resources and policies for service interoperability? Some providers may not allow you to take your application and put it on another platform.
or application testing, the U.S. Department of Defense (DoD) emulates field conditions using a cloud platform that the department leases only as long as needed
You pay only for what you use, and the service provides all the capacity you need, but you’re responsible for monitoring, managing, and patching your on-demand infrastructure. Sometimes referred to hardware as a service
Security and Privacy- The top most concern that everybody seem to agree as a challenge with cloud is security. The data security and privacy concerns ranks top on almost all of the surveys. Cloud computing introduces another level of risk because essential services are often outsourced to a third party, making it harder to maintain data integrity and privacy, support data and service availability, and demonstrate compliance.Service Quality: Service quality is one of the biggest factors that the enterprises cite as a reason for not moving their business applications to cloud. They feel that the SLAs provided by the cloud providers today are not sufficient to guarantee the requirements for running a production applications on cloud especially related to the availability, performance and scalability. In most cases, enterprises get refunded for the amount of time the service was down but most of the current SLAs down cover business loss. Without proper service quality guarantee enterprises are not going to host their business critical infrastructure in the cloud. Performance / Insufficient responsiveness over network: Delivery of complex services through the network is clearly impossible if the network bandwidth is not adequate. Many of the businesses are waiting for improved bandwidth and lower costs before they consider moving into the cloud. Many cloud applications are still too bandwidth intensive.Integration: Many applications have complex integration needs to connect to other cloud applications as well as other on-premise applications. These include integrating existing cloud applications with existing enterprise applications and data structures. There is a need to connect the cloud application with the rest of the enterprise in a simple, quick and cost effective way.
