Experiencing MIS 7th by m kronenke chapter 06

Chapter 6
The Cloud


“No, I mean 25 cents an hour . . . and probably less.”
• Uses a traditional, third-party hosting organization whose servers
most certainly are not elastic.
• Web hosting costs rising rapidly.
• Lucas suggests provisioning Web servers and databases in the
cloud.
• Costs: $50/mo plus 25-cents per hour for processing time used.
• Need to store new, large 3D printing design files.
• Storage requirement depends on sales volume.

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Study Questions
Q1: Why is the cloud the future for most organizations?
Q2: What network technology supports the cloud?
Q3: How does the cloud work?
Q4: How do organizations use the cloud?
Q5: How can AllRoad Parts use the cloud?
Q6: How can organizations use cloud services securely?
Q7: 2024?

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Q1: Why Is the Cloud the Future for Most
Organizations?
• The cloud
– Elastic leasing of pooled computer resources over the
Internet.
– Elastic
 Leased computing resources quickly increased or
decreased dynamically, programmatically,
organizations only pay for resources used.
– Flexibility for unpredictable demand while limiting financial
risks.
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Example of a Video Banner Ad Customer

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Pooled
• Cloud resources are pooled
– Many different organizations share same physical
hardware through virtualization.
• Benefit from economies of scale

– Average cost of production decreases as size of operation
increases.
– Major cloud vendors operate enormous Web farms.

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• Apple Data
Center in
Maiden, NC
Billion-dollar
facility contains
more than
500,000 sq ft

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Why Is the Cloud Preferred to In-House Hosting?

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Why Is the Cloud Preferred to In-House Hosting?

(cont'd)

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Why Now?
• Been around since 1960s
– Time-sharing vendors provided slices of computer time on a
use-fee basis.
• Cloud-based hosting advantageous
– Cheap processors, data communication, data storage nearly
free.
– Virtualization technology enables near instantaneous creation
of new virtual machine.
– Internet-based standards enable cloud-hosting vendors to
provide flexible, standardized processing capabilities.
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When Does the Cloud Not Make Sense?
• When, by law or standard industry practice, required to have
physical control over its data.
• Financial institution might be legally required to maintain
physical control over its data.

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Ethics Guide: Cloudy Profit?
• Data broker (or data aggregator).
• Specializes in acquiring and analyzing market, buyer, and
seller data for real estate agents.
• Alliance transitioned data storage and processing from own
Web farm to the cloud.
• Improved speed and quality of data services at fraction of
prior costs, cut in-house hardware support staff by 65%.
• Plowing money back into R&D.

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Q2: What Network Technology Supports the Cloud?

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Typical Small
Office/Home
Office
(SOHO) LAN

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LAN Protocol
•IEEE 802.11
– Wireless LAN
– 10/100/1000 Mbps – 802.11n
– Up to 600 Mbps
– Ethernet
– Bluetooth

•IEEE 802.3
– Wired LAN

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Abbreviations Used for Communications and
Computer Memory Speeds Differ.
• Communications equipment, k stands for 1,000, not 1,024 as
it does for memory.
• M stands for 1,000,000, not 1,024 × 1,024.
• G stands for 1,000,000,000, not1,024 × 1,024 × 1,024. Thus,
100 Mbps is 100,000,000 bits per second.
• Communications speeds are expressed in bits, memory

sizes expressed in bytes.

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Connecting Your LAN to the Internet
Important ISP functions:
1.Provide a legitimate Internet address.
2.Gateway to the Internet.
3.Pay for Internet by collecting money from customers and
paying access fees and other charges to telecoms.

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Summary of LAN and WAN Networks

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Q3: How Does the Cloud Work?
The cloud resides
in the Internet

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TCP and IP Protocols
• Transmission Control Protocol (TCP)
– Breaks traffic up into packets and send each one along.
• IP (Internet Protocol).
• Routers.

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IP Addressing
Public IP Addresses
• Identifies particular device on public Internet.
• Public IP addresses unique, worldwide.
• Assignment controlled by ICANN (Internet Corporation for
Assigned Names and Numbers).
Private IP Addresses
• Identifies particular device on a private network.

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IP Addressing (cont'd)
Major benefits
• Public IP
– Devices on LAN share a public IP address.
• Private IP
– Need not register computer with ICANN-approved
agencies.
– Assignment controlled within the LAN.

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Public IP Addresses and Domain Names
• IPv4
– Four decimal dotted notation like 165.193.123.253
• Domain name
– Worldwide-unique name affiliated with a public IP address.
– Affiliation of domain names with IP addresses is dynamic.
•URL (Uniform Resource Locator)

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Domain Registrar Company

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Sample of Commerce Server Pages; Product Offer
Pages

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