Module 1 Flashcards
Definition of cloud computing
Model for enabling convenient on-demand network access to a shared pool of configurable computing resources that can be RAPIDLY PROVISIONED AND RELEASED WITH MINIMAL MANAGEMENT EFFORT OR SERVICE PROVIDER INTERACTION
5 Essential characteristics of the Cloud
1-On demand self service 2-Broad network acces 3-Resource pooling 4-Rapid elasticity 5-Measured service
3 Types of deployment models
Public, Private, Hybrid
Hybrid deployment method
Connects an organization’s on premises private cloud and a 3rd party public cloud into a single flexible infrastructure for running applications and workloads
3 service models
Infrastructure as a service
Platform as a service
Software as a service
Infrastructure as a service
Provides access to physical computing resources such as servers, storage, networking, and data center space without need to manage or operate (Driving your own car)
Platform as a service
Provides access to hardware and software tools needed to develop and deploy applications to users over the internet (Renting a car)
Software as a service
Is a software licensing and delivery model in which software and applications are centrally hosted and licensed on a subscription basis (Taxi)
Hypervisor
small software layer that enables multiple operating systems to run alongside each other, sharing the same physical computing resources. A hypervisor also separates the VMs logically, assigning each its own slice of underlying computing power, memory, and storage, thus preventing the virtual machines from interfering with each other.
Key considerations for orgs developing cloud strategy
- Infrastructure and workloads – cost of building and operating data centers.
- Software-as-a-Service (SaaS) and development platforms – paying for application access is more viable versus buying off-the-shelf software and required upgrades.
- Speed and productivity – getting a new application up and running in a few hours in the cloud versus several weeks/months.
- Use of cloud dashboards – efficiencies gained from cloud dashboards offers real-time statistics and active analytics.
- Risk exposure – invest in hardware/software versus renting by the hour; work on a plan to build, write, test, and release the code if uncertain about adoption; or pay-as-you-go option versus little or no trial or adoption.
Benefits of cloud adoption
Flexibility, efficiency, strategic value
The origins of cloud computing
can be traced back to the mainframes of the 1950s, with virtualization technologies and hypervisors serving as catalysts for the emergence of modern-day cloud computing.
How does the National Institute of Standards and Technology (NIST) define cloud computing?
NIST defines cloud computing as amodel for enabling convenient, on-demand network access to a shared pool of compute resources.
Which of the following best describes a computing environment that connects an organization’s on-premises private cloud and a third-party public cloud into a single flexible infrastructure for running applications and workloads?
Hybrid
Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-as-a-Service (SaaS) are generally known as which of the following?
Service models