24 Questions
What is an advantage of using cloud standards, as seen in the example of Best Bikes?
Elasticity and pooled resources
What is the primary difference between Best Bikes' approach and cloud computing?
Absence of scalability and pooled resources
What type of cloud service would Google Mail be classified as?
SaaS
What is a key characteristic of IaaS?
Provides virtualized computing resources over the internet
Which of the following is NOT a cloud deployment model?
Content Delivery Network
What is the primary benefit of using SaaS services like Office 365?
Access to software applications over the internet
What is the primary benefit of using PaaS?
A platform for developing and deploying applications
What is the primary difference between PaaS and IaaS?
PaaS provides a platform for developing applications, while IaaS provides access to software applications
What is a major factor contributing to the growth of cloud computing?
Cheap processors and essentially free data communication and data storage
When does the cloud not make sense for organizations?
When law or standard industry practice require physical control or possession of the data
What is the most popular way organizations use the cloud?
Use cloud service
What are the three fundamental cloud types?
IaaS, PaaS, SaaS
What is provided in an IaaS?
Bare server computer, data storage, network, and virtualization
What is an example of IaaS?
Rackspace Inc.
What is hosted in a PaaS?
Computers with an operating system, runtime environment, and middleware
What is a benefit of IaaS over traditional on-premises hosting?
Substantial cost savings
What is the primary role of middleware in a Platform as a Service (PaaS) environment?
To provide a unified service by bridging different applications
What type of cloud deployment model is Microsoft Windows Azure an example of?
Platform as a Service (PaaS)
What is the primary benefit of using a Content Delivery Network (CDN)?
Reduced latency
Which of the following is an example of a Software as a Service (SaaS) provider?
Salesforce.com
What is the primary difference between a traditional server and a Content Delivery Network (CDN)?
Latency
What type of cloud deployment model is Oracle On Demand an example of?
Platform as a Service (PaaS)
What is the primary role of a Platform as a Service (PaaS) provider?
To host the customer's applications and provide an operating system and runtime environment
What type of cloud deployment model is Amazon EC2 an example of?
Infrastructure as a Service (IaaS)
Study Notes
Using Web Services Internally
- Best Bikes runs its own servers on its own infrastructure, setting up a private internet within the company.
- The company writes applications for processing inventory using Web services standards.
- Application users access the inventory Web services using JavaScript.
Cloud Types
- Three fundamental Cloud Types:
- Infrastructure as a Service (IaaS)
- Platform as a Service (PaaS)
- Software as a Service (SaaS)
Infrastructure as a Service (IaaS)
- Provides bare server computer, data storage, network, and virtualization hosted by the cloud.
- Examples:
- Rackspace Inc. provides hardware for customers to load specific operating systems.
- Amazon's Simple Storage Service provides unlimited, reliable data storage in the cloud.
- The cost savings of IaaS over traditional on-premises hosting can be substantial.
Platform as a Service (PaaS)
- Hosted computers with an operating system, runtime environment, and middleware provided by vendors.
- Middleware bridges different applications to provide unified service.
- Examples:
- Microsoft Windows Azure provides servers installed with Windows Server.
- Microsoft SQL Azure provides a host with Windows Server and SQL Server.
- Oracle On Demand provides a hosted server with Oracle Database.
- Amazon EC2 provides servers with Windows Server or Linux installed.
Software as a Service (SaaS)
- Provides hardware infrastructure, operating system, application programs, and databases.
- Examples:
- Salesforce.com provides hardware and programs for customer and sales tracking.
- Google Drive, OneDrive, Office 365, Exchange, Skype for Business, SharePoint applications.
Content Delivery Network (CDN)
- A system of distributed servers that deliver web pages and other web content.
- Stores user data in many different geographical locations and makes them available on demand.
- Minimizes latency.
- A specialized type of PaaS, in its own category.
When to Use the Cloud
- When law or standard industry practice do not require physical control or possession of the data.
- Organizations can use the cloud in several different ways, with the most popular way being using cloud services.
Benefits of the Cloud
- Cheap processors, essentially free data communication, and data storage.
- Virtualization technology enables flexible, standardized processing capabilities.
- Internet-based standards enable flexible, standardized processing capabilities.
When Not to Use the Cloud
- When law or standard industry practice require physical control or possession of the data.
- Examples: Financial institutions legally required to maintain physical control over their data.
Best Bikes runs its own servers on its own infrastructure and sets up a private internet. Learn about using web services internally with this example.
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