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Cloud Computing Services Models - IaaS PaaS SaaS Explained - YouTube
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Cloud computing basics. The advancement
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of technology and encompassing networks
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storage and processing power led to
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epitome of computing. In this century
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it's called cloud computing or commonly
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referred to as cloud. What is cloud
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computing? Cloud computing is a paradigm
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that allow on-demand network access to
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shared computing resources, a model for
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managing, storing and processing data
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online via the Internet. Some cloud
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computing characteristics include;
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On-demand service: You use it when you
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need it. Network access: Using Internet as
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a medium. Shared resources: Resources are
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pulled together and used by multiple
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clients. Scalability: Allows elasticity of
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resources. Three delivery models of cloud
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computing: SaaS, PaaS and IaaS. Cloud
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computing offers different services
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based on three delivery models. When
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arranged in a pyramid form. They follow
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the order of SaaS, PaaS and IaaS. What is SaaS?
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SaaS or software as a service. It is a
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service that offers on-demand pay per use
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of application software to users. Unlike
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licensed bought programs. This service is
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platform independent and you don't need
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to install the software on your PC. The
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cloud runs a single instance of the
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software and makes it available for
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multiple end-users. This makes cloud
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computing cheap. All the computing
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resources responsible for delivering SaaS
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are entirely managed by the vendor. This
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service is accessible via a web browser
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or lightweight client applications. Who
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use Saas - End customers are frequent
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users of SaaS. Example product and
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services of SaaS. Popular SaaS providers
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offer the following products and
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services. The Google ecosystem such as
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Gmail, Google Docs and Google Drive.
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Microsoft Office 365, HR and helpdesk
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solutions and customer relationship
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management services such as Salesforce.
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Pros: Universally accessible from any
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platform. No need to commute you can work
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from any place.
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Excellent for collaborative working.
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Vendor provides modest software tools.
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Allows for multi-tenancy. Cons:
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Portability and browser issues. Internet
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performance may dictate overall
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performance. Compliance restrictions.
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What is PaaS? PaaS or
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platform-as-a-service. This service is
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mainly a development environment and is
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made up of a programming language
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execution environment, an operating
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system a web server and a database. All
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of this encapsulate the environment
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where users can build, compile and run
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their programs without worrying at the
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underlying infrastructure. In this model
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you manage data and the application
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resources. All other resources are
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managed by the vendor. Who uses PaaS? This
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is a domain for developers. Example
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products and services of PaaS. Cloud
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providers have the following as the PaaS
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products and services: Amazon Web
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Services elastic Beanstalk, Google App
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Engine, Windows Azure, Heroku and
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force.com Pros: Cost-effective rapid
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development. it's scalable. Faster market
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for developers. Easy deployment of web
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applications. Private or public
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deployment is possible. Cons: Developers
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are limited to providers languages and
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tools. Migration issues such as the risk
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of vendor lock-in.
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What is IaaS? IaaS or
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infrastructure-as-a-service this service
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offers the computing architecture and
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infrastructure that is it offers all
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computing resources but in a virtual
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environment so that multiple users can
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access them. These resources include data
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storage, virtualization, servers and
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networking. Most vendors are responsible
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for managing the above for resources. If
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you will use this service you will be
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responsible for handling other resources
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such as applications, data, runtime and
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middleware Who use IaaS?
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IaaS is mainly
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for SysAdmin. Example products and
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services of IaaS they include Amazon EC2,
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GoGrrid and Rackspace.com Pros: The
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cloud provides the infrastructure.
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Enhanced scalability dynamic workloads
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are supported. IaaS is flexible. Cons:
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Security issues. Network and service
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delays. Examples of companies that use
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cloud computing. Amazon's AWS or Amazon
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Web Services. When it comes to companies
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using cloud computing, AWS takes the lead.
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This cloud computing company offers IaaS
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and PaaS services to its customers. it's
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popular for its Elastic Compute cloud
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EC2. Among other services such as elastic
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beanstalk, Simple Storage Service (S3) and
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relational database service or RDS. Apart
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from the complete suite of cloud
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computing. It offers other cloud related
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services including internet of things
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(IOT), cloud security and mobile services.
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iCloud: This cloud from Apple is majorly
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for Apple products and allows you to
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backup and store all your multimedia and
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other documents online. This content is
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then seamlessly integrated onto all your
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devices or apps. In case you access it
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from them. Microsoft Azure: This cloud is
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used and offered by Microsoft. It offers
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IaaS, PaaS and SaaS for its enterprise
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software and developer tools. If you have
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ever used Office 365 products,
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then you have used SaaS. Google Cloud: The
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Google cloud platform is a universal
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cloud for Google's vast ecosystem and
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also for other products such as
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Microsoft Office it allows collaboration,
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storage of data and also other services
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offered by its cloud computing suite. IBM
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SmartCloud: Using Private, Public and
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Hybrid deployment models IBM SmartCloud
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provides a full range of IaaS, Paas and SaaS
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cloud computing services to businesses.
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Using pay-as-you-go model, this cloud
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generates revenue for IBM.
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