MIS 301 Exam #3 Section 1

The essential Characteristic of Cloud Computing include:

1. On-demand self-service: A consumer can be provided with computing capabilities when needed, usually without requiring human interaction with the service provider. 2. Broad Network Access: Multiple users are able to interact over a large scale of devices 3. Resources Pooling: Multi-Tenancy Model- the resources are dynamically assigned and reassigned according to consumer demand. With Location Independence - the client has little or no control or knowledge over the exact location of the hardware supporting the provided resources. 4. Measured Service: Resource usage can be monitored, measured (according to various metrics), controlled/optimized, and reported, provided transparency for both the provider and consumer. 5. Rapid Elasticity (Scalability) - Resources can be rapidly and elastically provisioned to quickly scale out when needed.

What are the barriers to cloud computing adoption?

1. Security: - Concern about data confidentiality in the cloud - Can the cloud service provider offer better security than the firm? 2. Availability: - Dependence on Internet Connection - higher risks in zones with weaker telecom infrastructure - Long-term viability of partner firms - Risk of crash of cloud infrastructure at the provider's site 3. Less flexibility in Choosing different versions -Being forced to migrate new versions will possibly incur unforeseen training costs and shifts in operating procedures -Customization and system integration compared to packaged software (for SaaS) 4. Total Cost of Ownership: - $ per CPU per hour; $ per GB per month - Number of accesses; Number of data transfers ** For high volume, low maintenance systems, it might make sense to buy rather than rent

Benefits of cloud computing for VENDORS

- limiting development to a single platform, instead of having to create versions for different operating systems - tighter feedback loop with clients, helping fuel innovation and responsiveness - ability to instantly deploy bug fixes and product enhancements to all users - lower distribution costs - accessibility to anyone with an Internet connection - greatly reduced risk of software piracy

BENEFITS FROM CLOUD COMPUTING FOR CLIENTS

BENEFITS FROM CLOUD COMPUTING: 1. Increased efficiency: - Reduce firm's assets that can stay idle and depreciate over time (reduced capital investment) - Reduce IT maintenance and upgrade costs - Free firm's IT resources for core competency tasks 2. Rapid Access to resources/ rapid deployment on platforms 3. Scalability - adjust resource consumption on a per—need basis. 4. LOW BARRIERS TO ENTRY!

What is cloud computing? What are the essential characteristics of cloud computing?

Cloud computing is a model for enabling on-demand network access (INTERNET) to a shared pool of configurable computing resources (e.g. servers, storage, applications) that can be rapidly provisioned with minimal service provider interaction. When talking about cloud computing, people are speaking of replacing software and hardware with services offered over the internet.

What basic question is PaaS essentially addressing for a cloud user?

PaaS gives client a toolkit that helps with app development. Examples: Window Azure, force.com, and Google App Engine.

What is PaaS?

PaaS is the capability provided to the customer to deploy onto the provider's (owned or contracted) cloud infrastructure consumer-created or acquired applications built using programming languages and tools supported by the provider.

What basic question is it essentially addressing for a cloud user?

Providing services or applications that simplify the customer's life that they don't have to have any control over managing. Examples: Google Drive.

What is Saas?

Software as a Service or SaaS, is the capability provided to the customer is to use the provider's applications running on a cloud infrastructure (not necessarily maintained by the provider of the application).

For PaaS, what are the resources the cloud user will have control over?

The PaaS client has control over the deployed applications.

What are the resources an IaaS cloud vendor will provide/manage and what are the resources the cloud user will have control over?

The capability provided the customer is to rent processing, storage, networks, and other fundamental computing resources from the provider where the consumer is able to deploy and run arbitrary software. Example: Amazon offering Cloud Service to Netflix.

For Paas, what are the resources the cloud vendor will provide/manage?

The cloud vendor of PaaS manages or controls the underlying clod inufrastructure including network, servers, operating systems, or storage. (Operating System AND Hardware)

With SaaS, what are the resources the cloud vendor will provide/manage?

The cloud vendor of SaaS manages or controls the underlying cloud infrastructure including network, servers, operating systems, storage, or even individual application capabilities, with the possible exception of limited user-specific application configuration settings. (App, Operating System, AND Hardware).

What does the Customer NOT control with Iaas?

The customer DOES NOT manage or control the underlying cloud infrastructure in IaaS. (Hardware ONLY)

What does the Customer control with Iaas?

The customer has control over operating systems, deployed applications, and possibly limited control of select networking components.

When you decide if you want to get service from a particular cloud vendor, why should you consider the long-term viability of the cloud vendor?

LOCKED IN => High Switching Costs - Interoperability among clouds is not yet at a mature stage - Large amounts of data are hard to move

What basic question is IaaS essentially addressing for a cloud user?

IaaS is answering the need for a server or raw processing power and/or storage.

2. What is IaaS?

Infrastructure as a Service or IaaS is an alternative to physical hardware; resources are allocated/made available online.