I often use these slides to lecture about cloud computing and its impact. This is not a technical lecture and is designed for general audience.

1. He110!
My name is William
https://ca.linkedin.com/in/william-pourmajidi-778ab01
# York University ITEC Program Graduate
# MSc Computer Science – Blockchain and Software
Engineerings
# PhD Candidate - Dept. of Computer Science - Ryerson
University
# 16 Years experience as programmer, developer, designer,
network engineer, Cloud Engineer , and recently: Cloud
Architect !
# Short Bio – Python Version…
MyLifeTime = random.randrange(0,115)
MyAge = currentDay.getMyAge()
While ( MyAge < MyLifeTime):
hobby = apply(learn(read(*computers*)))

2. Cloud Computing[Cloud Com·put·ing]
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.

3. What do we want to learn?

4. I start with, Why?

5. Basics
We are very demanding users:
• Computing Power
• Performance (speed and accuracy)
• Large Storage
• Service-based offerings (Netflix, Spotify,…)
• Increased Compatibility
• Ubiquitous access (Omnipresence)
• Security
• Compact Size , Long battery life

6. Basics
Computing Power
• Moore's Law: Each two years, the power of computing doubles, but our
problems get bigger at a faster rate.
• Stand-alone computation power is not enough to solve major problems
Example: Decryption Task
• A 3-deciuma lock
• 3 options , each from 0 to 9 (10 combination)
• Total 10 ^ 3 = 1000 combinations
• Trial for each combination : 2 seconds
• Total crack time (Worst case):
2000 second = 34 minutes

7. Digital Combinations
• A simple 64-bit binary encryption
• 2^64 = 18,446,744,073,709,551,616 (18 quintillion ) combinations!
• Assume we try 1000 combination per second (very fast)
Basics
It takes about 600 million years
to brute force this lock with one computer

8. Apple vs FBI
• Feb 2016, FBI asked Apple to assist them to break into an iPhone
(belonging to a mass shooter)
• Apple refused
• Apple uses 265 bit encryption (Far more complicated that 64 bit)
• FBI took Apple to court
• A few days after, FBI claimed they found a way to get in to iphone, how:
• High performance computing (paining a wall)
Basics

9. High Performance Computing (HPC): Joining millions of
computing engines (virtual machines) can solve a very complex
problem in matter of hours, or days.
Cloud: Powerful Computing

10. Data Center: a facility composed of networked computers and
storage that businesses or other organizations use to organize,
process, store and disseminate large amounts of data
Cloud: Powerful Computing

11. Canada’s Largest Data Center:
• 151 Front St. West.
• Handles the traffic rates of 531 Gbit/s making it number 1 in
Canada,
Cloud: Powerful Computing

12. Cloud: Organized and
Maintainable
Data Centers: Cabling
Use of “Raised Floors for cooling system and cabling)

13. Cloud: Secure
Data Centers: Physical Security
• No Windows
• Biometric locks (Eyes, Voice, finger print)
• Access Card (multi-level access cards)
• Security guards (Gun controlled environment)

14. Cloud: Secure
Data Centers: Logical Security
• Much more complicated than physical security
• Deep Packet Inspection
• Firewalls
• Layered Networks

15. Cloud: Secure
Data Centers: Logical Security
• Firewalls
• Layered Networks

16. Cloud: Financially Feasible
Charge back model: rent per hour and pay for what you use
• Storage : Pay per GB storage
• Computing: Pay per CPU and RAM per hour
• Network: Pay per GB data transfer

17. • Cloud: Powerful Computing
• Cloud: Organized and Maintainable
• Cloud: Secure
• Cloud: Financially Feasible
Why Cloud?
Because:

19. Cloud Computing
Stats

20. Statistical Status of Cloud
• Half of US Government agencies use the cloud
• By 2020, cloud computing will cross the $270 billion mark
• 2014 : The first year when the majority of workloads were on
the cloud.
• Amazon has “1,000,000,000” gigabytes of data across more
than 1,400,000 servers.
• 90% of Microsoft’s R&D budget is being allocated to improve
cloud technology
Reference : http://cloudtweaks.com/
Cloud Stats

21. Moving from On-premises to Off-Premisis
https://www.ibm.com
Cloud Stats

22. Companies by Number of Servers
Cloud Stats
www.softwareadvice.com

23. https://www.infoworld.com
Cloud Stats
Adoption rate among key Cloud players

24. Questions?
Comments?
Discussions?

25. Cloud Computing
Key characteristics

26. Cloud Computing Definition (Very Important):
Cloud Computing is a model for enabling ubiquitous, convenient, on-
demand network access to a shared pool of configurable computing
resources (e.g., networks, servers, storage, applications, and
services) that can be rapidly provisioned and released with minimal
management effort or service provider interaction.
Cloud Key Characteristics

27. Virtualization
• Virtualization is at the core of Cloud technology
• Huge impact on Utilization
Source: Vmware.com
Cloud Key Characteristics

28. Cloud Key Characteristics
Software Defined Network (SDN):

29. Elasticity
• Expanding and shrinking based on resource usage and tenant
demands.
Example 1.1: Let’s review your favorite online shopping service
around new year and two weeks after new year
JIT (Just In time)
• Creation time for 1 Linux server ~ roughly 4 minutes
• Creation time for 1 Windows server ~ roughly 4 minutes
• Creation time for 1000 Servers ~ roughly 4 minutes
Cloud Key Characteristics

30. High Availability
• Availability is a Non-Function-Requirement
• The amount of time that it is operational and available for use
• Feb 2017: A command typo , caused AWS to go down From
9:37AM PST to 1:54PM PST
• This incident costs AWS and its customers more than
US$150,000,000
Cloud Key Characteristics

31. Cloud Key Characteristics
Globally connected data centers

32. Redundant power infrastructure
Source : Wiley: Deploying and Managing a Cloud Infrastructure
Cloud Key Characteristics

33. 24x7x365 Monitoring
Cloud Key Characteristics

34. Hybrid distribution of accountability
SLA : Service Level Agreement
Cloud Key Characteristics

35. Cloud Deployment models
Private
• Owned by one company and USED by one company
Public
• Owned by one company and USED by many company
Hybrid
• The result of having both Private and Public Cloud : Lots of
flexibility , lots of problems
Community Cloud
• Owned by a group of companies who use the cloud as well (e.g.,
Universities , Research Institutes)
Cloud Key Characteristics

36. Infrastructure as a service (IaaS)
• Provider provides the infrastructure, client builds on top of it
• Very Flexible
• Requires advanced cloud expertise
Platform as a service (PaaS)
• Provider provides the infrastructure, virtualization, and OS
• Client uses the OS to install anything they like
• Requires generic IT knowledge
Cloud Key Characteristics

37. Foundations of cloud computing
Software as a service(SaaS)
• Provider provides EVERYTHING
• Client uses the service
• Example: Gmail , Google Drive, Salesforce, Online Office

38. Cloud Deployment models
Cloud Key Characteristics

39. Cloud Deployment models
Cloud Key Characteristics

40. Questions?
Comments?
Discussions?