Cloud Computing Overview - Module 1

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Questions and Answers

What is one significant characteristic of Web 2.0 applications compared to traditional applications?

Web 2.0 applications are extremely dynamic, continuously improving and integrating new updates based on user interaction.

How do Web 2.0 applications utilize loose coupling?

Loose coupling allows new applications to be synthesized by composing and integrating existing services, providing added value.

What role does user-generated content play in Web 2.0 applications?

User-generated content is crucial as it drives the interaction and services provided, enriching the application experience.

Which technologies help enhance the interactivity of Websites in the context of Web 2.0?

<p>Technologies like AJAX and Really Simple Syndication (RSS) significantly enhance user interactivity on Web 2.0 Websites.</p> Signup and view all the answers

What is meant by leveraging the 'long tail' of internet users in Web 2.0 applications?

<p>Leveraging the 'long tail' means making applications accessible and affordable to a wider audience, not just the majority.</p> Signup and view all the answers

How does cloud computing relate to Web 2.0?

<p>Cloud computing supports Web 2.0 by providing a platform for dynamic applications that enhance user interaction.</p> Signup and view all the answers

Can you name two Web 2.0 applications and their primary functions?

<p>Google Documents facilitates collaborative document editing, while YouTube allows users to upload and share video content.</p> Signup and view all the answers

What is the importance of lightweight deployment models in Web 2.0 applications?

<p>Lightweight deployment models allow for quick updates and improved user experiences without needing complex software installations.</p> Signup and view all the answers

How has cloud computing transformed the deployment of systems in terms of time and maintenance costs?

<p>Cloud computing enables systems to be deployed in hours rather than days and incurs virtually no maintenance costs.</p> Signup and view all the answers

What obstacles have limited the use of cloud computing to single or related services from one vendor?

<p>The lack of effective standardization efforts made it difficult to migrate services between different vendors.</p> Signup and view all the answers

What is the long-term vision for cloud computing regarding the trading of IT services?

<p>The long-term vision is for IT services to be traded as utilities in an open market without technological and legal barriers.</p> Signup and view all the answers

Why do different stakeholders leverage clouds, and what is the most common reason?

<p>Different stakeholders leverage clouds for various services, with the most common reason being the need for ubiquitous storage and compute power on demand.</p> Signup and view all the answers

What is envisioned as a solution for automating the discovery of cloud services?

<p>A global digital market is envisioned where users can enter requests to find matching cloud computing services seamlessly.</p> Signup and view all the answers

How does web-based access to documents and processing applications benefit end users?

<p>Web-based access enables users to manage and process documents using sophisticated applications from anywhere.</p> Signup and view all the answers

What potential advantages could a global platform for trading cloud services provide to service providers?

<p>Such a platform could enhance visibility for service providers, potentially increasing their revenue.</p> Signup and view all the answers

What does WSDL stand for, and what is its primary purpose?

<p>WSDL stands for Web Service Description Language, and its primary purpose is to define the characteristics and methods of a web service.</p> Signup and view all the answers

What major change would enable the integration of cloud resources into existing software systems?

<p>Automation of the service discovery process through a global marketplace would allow for seamless integration.</p> Signup and view all the answers

How does SOAP facilitate interaction with web services?

<p>SOAP facilitates interaction by providing a protocol for invoking web service methods and collecting results.</p> Signup and view all the answers

What role does the World Wide Web Consortium (W3C) play in web services?

<p>The W3C controls the standards and specifications concerning web services.</p> Signup and view all the answers

Name two architectural frameworks commonly used for developing web services.

<p>Two commonly used architectural frameworks for developing web services are ASP.NET and Axis.</p> Signup and view all the answers

What is the significance of utility computing in modern cloud services?

<p>Utility computing signifies a pay-per-use model for computing resources, making computing services more accessible and cost-effective.</p> Signup and view all the answers

Who is credited with the early vision of computing as a utility, and when was this mentioned?

<p>John McCarthy is credited with this vision, which he mentioned in a speech in 1961 at MIT.</p> Signup and view all the answers

What historical models foreshadowed the utility computing model?

<p>The mainframe era, where organizations rented computing power from IBM, foreshadowed utility computing.</p> Signup and view all the answers

In what way has service-oriented computing (SOC) contributed to cloud computing?

<p>SOC has contributed by enabling the development of distributed services that can be easily composed and integrated.</p> Signup and view all the answers

What are the two forms in which virtual storage is delivered?

<p>Raw disk space and object store.</p> Signup and view all the answers

What is the primary responsibility of service providers in Platform-as-a-Service (PaaS) solutions?

<p>To provide scalability and manage fault tolerance.</p> Signup and view all the answers

How does Software-as-a-Service (SaaS) differ from desktop applications?

<p>SaaS applications are hosted on the provider's infrastructure and accessed through a browser.</p> Signup and view all the answers

What types of users typically seek Infrastructure-as-a-Service (IaaS) solutions?

<p>Users who want to build dynamically scalable computing systems with a specific software stack.</p> Signup and view all the answers

What does virtual networking manage in cloud computing?

<p>The networking among virtual instances and their connectivity to the Internet or private networks.</p> Signup and view all the answers

What is the role of middleware in PaaS solutions?

<p>To create the abstract environment where applications are deployed and executed.</p> Signup and view all the answers

In the context of SaaS, how is user interaction managed to ensure isolation?

<p>User interactions are isolated from each other despite sharing the same application.</p> Signup and view all the answers

What is the significance of leveraging APIs and libraries provided by a service provider in PaaS?

<p>It allows users to efficiently develop applications without managing the underlying infrastructure.</p> Signup and view all the answers

What is the significance of Infrastructure-as-a-Service (IaaS) in resource management?

<p>IaaS allows users to add and remove computing resources effectively based on demand.</p> Signup and view all the answers

How do Platform-as-a-Service (PaaS) solutions control resource provisioning?

<p>PaaS solutions use algorithms and rules that can be either transparent or allow for fine control by developers.</p> Signup and view all the answers

What role do Web 2.0 technologies play in cloud computing?

<p>Web 2.0 technologies provide the interface for delivering, managing, and provisioning cloud services.</p> Signup and view all the answers

What does the acronym XaaS stand for in cloud computing?

<p>XaaS stands for 'Everything-as-a-Service', highlighting the service-oriented nature of cloud computing.</p> Signup and view all the answers

Why is virtualization considered a core feature of cloud infrastructure?

<p>Virtualization allows multiple virtual environments to run on a single physical system, optimizing resource usage.</p> Signup and view all the answers

What should developers consider regarding virtualization technology in cloud applications?

<p>Developers need to understand the limitations of virtualization technology and its impact on system volatility.</p> Signup and view all the answers

How does cloud computing address surges in demand for computing resources?

<p>Cloud computing replicates components of systems under stress to manage high demand effectively.</p> Signup and view all the answers

What are the key elements that guide the design of systems based on cloud computing?

<p>Dynamism, scale, and volatility of components are critical considerations in cloud systems design.</p> Signup and view all the answers

What type of applications may benefit from cloud computing due to their resource needs being temporary?

<p>Resource-intensive applications, such as scientific applications, can benefit from cloud computing as their resource needs are not constant or long-term.</p> Signup and view all the answers

Describe the main characteristics of resource-intensive applications as mentioned in the content.

<p>Resource-intensive applications are typically non-interactive and characterized by batch processing.</p> Signup and view all the answers

How does cloud computing facilitate scalability for applications?

<p>Cloud computing enables scalability by providing methods for renting compute power, storage, and networking as needed.</p> Signup and view all the answers

What is the role of representational state transfer (REST) in cloud computing?

<p>REST provides a simple Web interface through which developers can access cloud services.</p> Signup and view all the answers

Identify the core technologies that enable cloud service provisioning.

<p>The core technologies for cloud service provisioning include distributed computing, virtualization, service orientation, and Web 2.0.</p> Signup and view all the answers

What is a major challenge developers face in cloud computing environments?

<p>A major challenge is the extreme dynamism where new nodes and services are provisioned on demand.</p> Signup and view all the answers

Explain the significance of middleware in cloud computing.

<p>Middleware addresses the challenges of dynamic resource provisioning and integration within cloud computing systems.</p> Signup and view all the answers

Why is cloud computing considered a solution for temporary high computing capacity needs?

<p>Cloud computing offers on-demand resource access, allowing organizations to scale up computing power only when required.</p> Signup and view all the answers

Flashcards

Virtual Storage (Raw Disk Space)

A virtual storage solution that provides raw disk space for persistent storage, typically used to complement virtual hardware offerings.

Virtual Storage (Object Store)

A virtual storage solution that offers a high-level abstraction for storing data, typically used for storing entities like objects, rather than files.

Virtual Networking

The collection of services that manage network communication among virtual machines and provide them with connectivity to the Internet or private networks.

Platform as a Service (PaaS)

A cloud computing model that provides scalable and elastic runtime environments for deploying and running applications. It offers pre-configured platforms for developers to build and run applications.

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Software as a Service (SaaS)

A cloud computing model that provides on-demand access to applications and services. These applications are typically accessed via a web browser and are shared across multiple users.

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Infrastructure as a Service (IaaS)

A cloud computing model that offers on-demand computing resources, including servers, storage, and networking. Users have control over the underlying infrastructure.

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Infrastructure as a Service (IaaS) - Use Case

A cloud computing model that provides users with control over the underlying infrastructure, enabling them to build dynamic and scalable computing systems.

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Platform as a Service (PaaS) - Use Case

A cloud computing model that provides a scalable programming platform for developing applications. It's ideal for building new applications quickly and efficiently.

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Cloud computing

The ability to access and use computing resources like storage, processing power, and software over the internet, as needed, paying only for what is used, similar to paying for electricity or water.

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Cloud marketplace

A marketplace where cloud service providers offer various computing resources (like storage, processing power) and consumers purchase them as needed, similar to a traditional market for goods and services.

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Cloud service providers

Companies that provide computing resources (storage, processing power, software) over the internet, allowing others to access and use them as needed.

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Cloud service consumers

Individuals or organizations that utilize cloud services to meet their computing needs, ranging from personal use to large-scale enterprise applications.

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Standardization of cloud services

A system where cloud services are standardized and interoperable, allowing users to easily move their applications between different providers without significant technical challenges.

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Automated cloud service discovery

The ability to automatically discover and use cloud services based on the user's needs, without manual searching or intervention.

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Cloud service composition

The process of combining different cloud services to create a more complex solution or application.

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Automated cloud deployment and management

The capability to automatically deploy and manage cloud resources without manual configuration or intervention, reducing deployment time and maintenance costs.

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Resource-intensive applications

Applications requiring significant resources, like computation or data storage, for brief periods.

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Dynamic scaling

A characteristic of a cloud system where resources can be dynamically scaled up or down based on need.

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Cloud computing technologies

A set of technologies that enable the provisioning of cloud services from anywhere in the world.

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Dynamicism of cloud systems

The dynamic nature of cloud systems, where new nodes and services are added on demand.

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Dynamicism Challenges

A challenge for engineers and developers in cloud computing due to the dynamic nature of cloud systems.

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Middleware layer in cloud computing

A software layer responsible for managing and coordinating resources in distributed systems.

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Service-oriented architecture

A technology that allows developers to access cloud services over the internet through standardized interfaces.

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WSDL

A language that defines the characteristics of a web service, including its methods, parameters, descriptions, and return types.

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SOAP

An XML language used to invoke web service methods and retrieve their results.

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W3C

The organization that controls standards and specifications for web services.

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Utility Computing

A method of accessing and using computing resources like storage, processing power, and applications on a pay-per-use basis.

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Service-Provisioning Model

A model of service provision where resources are packaged and offered as services, often on a pay-per-use basis.

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Computing as a Utility

The concept of providing computing resources as a utility, similar to services like electricity or water.

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Service Composition

The ability to combine multiple distributed services to create more complex and powerful applications.

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Continuous Evolution of Web 2.0 Applications

Web 2.0 applications are constantly evolving and improving. Updates and new features are added regularly based on user activity and feedback.

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Cloud-based Software Updates

Users interact with cloud-based applications, eliminating the need for software updates on individual devices.

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Loose Coupling in Web 2.0

Web 2.0 applications are designed to be easily combined and integrated with other services, creating new functionalities.

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Web 2.0 and the Long Tail

Web 2.0 aims to reach a wide audience by providing accessible and affordable services, catering to diverse interests.

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User-Generated Content in Social Media

Social networking platforms like Facebook and Flickr leverage user engagement and interaction to create and share content.

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Enhanced User Experience in Web 2.0

Technologies like AJAX and RSS enhance interactive experiences, making websites more dynamic and engaging for users.

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Harnessing Collective Intelligence

Websites like Flickr and Facebook benefit from the collective intelligence of users, who contribute to the platform's content and functionality.

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Web 2.0 and Cloud Computing Synergy

Web 2.0 is a mature platform that supports the needs of cloud computing, leveraging user-generated content and interactive technologies.

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Web 2.0 Technologies in Cloud Computing

Web-based technologies are used to provide, manage, and access cloud computing services.

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Service Orientation in Cloud Computing

A design approach where cloud services are offered as reusable and interconnected components.

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XaaS (Everything-as-a-Service)

A common acronym that emphasizes the central role of service orientation in cloud computing, representing 'Everything-as-a-Service.'

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Virtualization in Cloud Computing

A technology used to create virtualized environments within cloud computing, enabling efficient resource allocation and management.

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Dynamic Scalability in Cloud Computing

The ability of cloud systems to respond to demand fluctuations by dynamically scaling up or down computing resources.

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Design Considerations for Cloud Applications

The key principle of designing cloud applications, considering volatile and scalable components to handle unpredictable workloads.

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Study Notes

Module 1

  • Computing is being transformed into a utility-based model
  • Users access services based on their needs, regardless of location
  • Cloud computing is the latest paradigm
  • Cloud computing focuses on how systems are designed, applications developed, and existing services used
  • Cloud computing offers dynamic provisioning of services: computing, storage, network and IT infrastructure
  • Resources are made available on a pay-per-use basis through the internet from cloud vendors
  • Cloud usage allows scaling infrastructure up or down, in hours, and users only pay for the used resources
  • Cloud computing offers dynamic scaling of resources and infrastructure, fitting different business needs
  • Users do not need to deeply understand the infrastructure needed by their applications
  • Utility computing concepts are similar to water, electricity, and telephony

Cloud computing significantly transforms organizational management of technological resources by enabling internet access to computing power, storage, and applications without heavy hardware investments.

  • Leonard Kleinrock, an internet pioneer, envisioned "computer utilities" in 1969
  • This vision anticipated the massive transformation of the computing industry in the 21st century
  • Cloud services are now readily accessible on demand
  • Users pay providers for the services they use

Vision of Cloud Computing

  • Cloud computing allows anyone with a credit card to provision virtual hardware, runtime environments, and services
  • This is used for as needed without upfront costs
  • Cloud computing removes IT maintenance burden from the user
  • Cloud computing delivers IT services as utilities
  • Cloud computing is a way of trading IT services as utilities in an open market

Defining a Cloud

  • Cloud computing is a popular term, encompassing various concepts
  • These concepts include virtualized infrastructure, hardware on demand, utility computing, IT outsourcing and other related areas
  • Cloud computing systems are now widely used in numerous contexts
  • Cloud computing is a model that allows easily accessing computing resources from anywhere through the internet-based network
  • Users can provision these resources and pay as they need

A Closer Look

  • Cloud computing helps various organizations create more effective computing systems
  • Examples are large enterprises like the New York Times, or smaller companies, and research organizations
  • Cloud computing facilitates the ability to access and edit data from anywhere and any device

Cloud Deployment Models

  • Public, private, and hybrid clouds are major deployment methods
  • Public clouds provide infrastructure (eg., virtualized datacenters) to anyone on a subscription basis
  • Private clouds mirror public clouds, but on a company's own infrastructure
  • Hybrid clouds utilize both public and private cloud resources

Cloud Computing Reference Model

  • The Cloud Computing Reference Model depicts various cloud services in a layered structure
  • The basic structure is Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-as-a-Service (SaaS)

Historical Developments

  • Computing grids, mainframe computing, cluster computing, and grid computing have influenced cloud computing

  • Mainframes: Large, powerful, highly reliable computers used for large data processing tasks

  • Clusters: Commodity computers, connected together forming a single system, cheaper than mainframes. used for parallel and high-performance computing

  • Grids: A further evolution of clusters, able to distribute resources to multiple locations

  • Web 2.0 and service-oriented computing have contributed and shaped the cloud environment

Virtualization

  • Virtualization enables different computing environments simulation of hardware interface expected by an operating system
  • Virtualization makes it possible to co-habit different software stacks on top of the same computer hardware
  • Creating isolated virtual machin instances, running separately and providing high-performance servers with multiple instances

Web 2.0

  • Web 2.0 is the primary interface of cloud computing services
  • Web 2.0 applications are extremely dynamic with new updates constantly
  • Web 2.0 applications are able to use multiple devices such as phones, dashboards, and TVs
  • Web 2.0 applications emphasize interaction and are lightweight
  • Web 2.0 leverages user feedback to continuously improve and add features.

Service-Oriented Computing

  • Services are the core reference model
  • The main structure and building blocks are services composed of distributed tasks
  • Service-oriented computing allows ease of access to services from various devices and in different locations
  • The key concept is that services are independent of platforms

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