Assignment 1 day3- A00121996 PDF

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about supply chain and logistics...

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Submitted By: SHAFEEQUE AHMED SYED Submitted To: KHALID KHAN Student ID: A00121996 Subject: GLOBAL LOGISTICS Assignment Day3 Classwork

Introduction A computational environment that offers transparent access to a shared pool of computing resources matching the user's needs, such as computing power, storage, applications, and components, varies mainly in the extent of transparency addressed in the following eight aspects: Access, location, concurrency, replication, failure, mobility, performance and scaling." [Egypt's Cloud Computing Strategic Plan-2011] Primary Benefits of Cloud Computing 1. Two primary benefits 

Increasing agility

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Reducing costs

2. Agility improves with ability to re-provision technological infrastructure resources. 3. Cloud computing provides both application developers and users an abstract view of services that shields complexities and details Public Cloud: The service providers offer their resources to their customers. Offers key benefits to service providers, including: - No initial capital investment on infrastructure and shifting risks to infrastructure providers. Public clouds cannot provide fine-grained controls over their data, networks, and security settings, thus limiting their effectiveness in many business scenarios. Private (Internal) Cloud: They are designed for exclusive use by a single organization. It may be built and managed by the organization or by external providers. It offers the highest degree of control over

performance, reliability, and security. However, similar to traditional server farms, and do not provide benefits such as no upfront capital costs. Hybrid Cloud: The combination of public cloud models and private cloud models offers more flexibility than both public and private. It contains a portion of the service infrastructure that runs in private clouds, and the remaining amount runs in public clouds. A private cloud service provides better data security and control than public clouds while still providing on-demand service expansion. Requires determining the best split between the public (or cloud) and the private (or on-premise) components. Cloud Computing Services:

Some Commercial Clouds: 1. Windows Azure (PaaS) 

Hosting service for .NET applications and SQL databases

2. Google App Engine (PaaS) 

Automatic scaling and reliability at the price of a highly constrained application structure (3-tier Web application)

3. Amazon Web Services (IaaS)

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Includes Scalable Storage Service (S3), Elastic Computing Cloud (EC2), Elastic Block Store (EBS) Comes with many secondary tools: e-commerce, ContentDistribution Network (CDN), etc.

References: 

E-Commerce on Cloud: Opportunities and Challenges (book)

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https://www.computerweekly.com/photostory/2240109268/The-Computer-Weeklyguide-to-Cloud-Computing/2/The-difference-between-Saas-Paas-and-Iaas...