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What are some styles of distributed cloud?
on premises public cloud, internet of things edge cloud, metro area community cloud, 5g mobile edge cloud, global network edge cloud.
What are the top challenges of cloud services?
Spending, security, and expertise. Companies like to prioritize cost optimization over sustainability.
Why has the cloud gained so much hype?
Economics.
What economic benefits does the cloud present?
Economy of scale. Public cloud providers. Private clouds reducing people cost.
What does the cloud mean for the economy of scale?
For people who want to use cloud services, it is easier for them to rent the storage and services over buying the technology and resources to operate the cloud. Similar to reasons, you go to a restaurant rather than buy all the ingredients and tools to build a specific meal. You would rather pay for the service and labor over investing in the whole facility.
So people can make reoccurring payments for cloud services, and they may expand or reduce the number of services they wish to use and pay for.
What does the cloud mean for public cloud providers?
For companies that have the resources, they are able to build facilities to maintain and operate cloud services. So, the economy of scale makes these cloud services profitable. For the people, this is a simple route to obtain cloud services as they also benefit from the low up-front costs.
Although infrastructure and administration could run up costs if moderately successful.
What does the cloud mean for private clouds?
It reduces the cost of administration and allows them to consolidate IT functions.
What cloud economics affect providers?
Economy of scale: purchasing, powering, and managing machines at scale gives lower per unit costs than customers’
trade-offs
fast growth vs efficiency
flexibility vs cost
Speed of iteration: software as a service means fast time-to-market, updates, and detailed monitoring feedback
What cloud economics affect users?
Pay as you go pricing: services charge by minute/per byte. no minimum or upfront fee. Helpful when apps have variable utilization.
Elasticity: good when use of resources is not consistent. people want the same progress to get a result faster. (using 1000 servers for 1 hour costs the same as 1 server for 1000 hours)
Why was the cloud not established earlier?
Lack of need, earlier applications didn’t require cloud scale processing.
Limited mobile and wireless technology, before the internet, cloud services were impractical.
Computing and storage costs, was not cost effective before advancements in virtualization and storage.
Network speed and reliability, early internet infrastructure couldn’t support fast and reliable cloud interactions.
Why was the cloud not established earlier in detail?
Availability of relevant tech maturity. Such as high capacity networks, low cost computers and storage, virtualization.
Certain applications unavailable. Such as mobile and wireless apps, which rely on data storage and processing. Parallel batch processing ad hoc compute intensive tasks, previous large workloads ran on local data centers due to limited networking speed and cloud infrastructure. Small data before datafication, not enough collection before to justify large scale cloud adoption. Along with immature cloud infrastructure limiting processing to convert data and analyze. And the lack of cross platform integration to merge data from multiple sources.
What services does the cloud have?
Infrastructure: computer servers, storage, networks
Platform: app development frameworks
Software: productivity apps, personal finance,…
What is IaaS?
It was the next step evolution from data center hosting. Basic storage, compute, and network facilities. Providing choice of virtual machines to install on bare device, and run. Internally, mapping to bare device is hidden from user.
What are examples of IaaS?
Amazon EC2, VMWare vCloud, Rackspace, Azure IaaS, Google compute engine. With time and evolution, more systems such as Storage (“EBS”), database (RDS, SimpleDB, SQLAzure), elastic MapReduce.
What is PaaS?
Provided an entire app dev framework.
Example Google AppEngine. Here you could run your web apps, business apps, and write and manage business apps.
What are other examples of PaaS?
AWS Elastic beanstalk, Windows Azure, Vmware Foundry, Heroku, Salesforce.com
What is SaaS?
On demand software. This became a common delivery model for most business applications (accounting, collaboration, customer relationship management, ERP, HR management)
What are examples of SaaS?
gmail/hotmail, google docs, turbo tax, office 365, microsoft office web companions
What are the consumption/deployment types of cloud?
on premises, hybrid, cloud
How do you differ private vs public services?
Not about ownership of the physical resource, but who can access and use it.
Explain public clouds
open for general public
may be owned, managed, and operated by a business, academic, or gov org, or a combination
exists on the premises of a cloud provider
Explain private clouds
for exclusive use of a single org./specific users
may be owned, managed, and operated by the organization, third party, or a combination
exists on or off premises of the org.
Explain community clouds
exclusive use by a community
may be owned, managed, and operated by the organization, third party, or a combination
exists on or off the premises of the org.
eg. GENI, fed gov cloud initiative for various gov services
Explain hybrid clouds
combination of community, private, and public cloud infastructures
bound together by standardized or proprietary technology for portability
you may have your own set of resources but if you exceed the limit, then by surge protection, you may be denied service
cloud bursting is when there is a sudden spike in demand for resources. so when the private cloud reaches capacity, you are bursted into the public cloud to access additional processing power.
translate fixed costs into fixed + variable costs
Note 
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