Microsoft Word - Z493 Cloud Computing Basics Features And Services.pdf

It explores three primary service models: Platform as a Service (PaaS), Software as a Service (SaaS), and Infrastructure as a Service (IaaS). The authors discuss the advantages of cloud computing, including cost savings, high availability, reliability, and scalability.

Keywords: Cloud Computing, Cloud Services, PaaS, SaaS, IaaS

Introduction: Cloud computing offers a new way to access and manage computing resources, shifting the burden from individual users to service providers. This technology allows for convenient access to software, storage, and application development tools over the internet.

Cloud Service Models:

PaaS (Platform as a Service): Enables developers to build and deploy applications on a cloud-based platform, abstracting away infrastructure management.

SaaS (Software as a Service): Provides access to software applications hosted in the cloud, accessible via thin clients like web browsers.

IaaS (Infrastructure as a Service): Offers virtualized computing resources (servers, storage, networking) over the internet, allowing users to deploy and manage their own software.

Cloud Deployment Models: Cloud infrastructure can be deployed in four ways:

Private Cloud: Dedicated to a single organization, either on-premise or managed by a third party.
Public Cloud: Shared resources available commercially from cloud service providers.
Community Cloud: Shared by several organizations with similar needs and concerns.
Hybrid Cloud: A combination of private and public clouds, allowing for data portability and flexibility.

Benefits of Cloud Computing:

Cost Savings: Reduces capital expenditure on hardware and software.
Scalability/Flexibility: Easily scales resources up or down based on demand.
High Availability: Ensures continuous access to applications and data through redundancy and failover mechanisms.
* Reliability: Cloud providers handle maintenance, backups, and disaster recovery.