Cloud Computing – The Business Perspective – Marston et al. Flashcards
(Article: Cloud Computing – The Business Perspective – Marston et al.)
What is the introduction?
- cloud computing represents fundamental change in way IT services are invented, developed, deployed, scaled, updated, maintained, paid for
- computing represents paradox:
1) computing power nowadays considered as commodity as per-unit costs decreases
2) computing becomes more pervasive within orga – more expensive than ever - promise of cloud computing: deliver all functionality of existing IT services while dramatically reducing all upfront costs of computing
(Article: Cloud Computing – The Business Perspective – Marston et al.)
What are the computing represents paradox?
1) computing power nowadays considered as commodity as per-unit costs decreases
2) computing becomes more pervasive within orga – more expensive than ever
(Article: Cloud Computing – The Business Perspective – Marston et al.)
what ist the Convergence of two trends in IT within cloud computing?
Convergence of two trends in IT within cloud computing: a) IT efficiency: use of power of computers more efficiently through highly scalable hardware + software resources (+ possibility of green computing)
b) business agility: IT used as competitive tool through rapid deployment, parallel batch processing, use of compute-intensive business analytics & mobile interactive apps that respond in real time
(Article: Cloud Computing – The Business Perspective – Marston et al.)
what ist the Formal definition of cloud computing?
Formal definition of cloud computing: informational technology service model where computing services are delivered on-demand to customers over network in self-service fashion, independent of device & location; users pay for service as operating expense = no initial capital expenditure
(Article: Cloud Computing – The Business Perspective – Marston et al.)
what are the KEY ADVANTAGES OF CLOUD COMPUTINg?
1) lowers cost of entry for smaller firms trying to benefit from compute-intensive business analytics + opportunity for third-world countries
2) almost immediate access to hardware resources with no upfront capital: leading to faster time to market in many businesses + adaptive infrastructure able to be shared by many users
3) can lower IT barriers to innovation
4) makes it easier for enterprises to scale their services: according to client demand
5) makes possible new classes of applications + delivers services that were not possible before:
(a) mobile interactive apps that are location-, environment-, context-aware & respond to real time info (eg weather app)
(b) parallel batch processing – allows to take huge amounts of processing power to analyse data for small period of time
(c) business analytics that can use vast amount
(Article: Cloud Computing – The Business Perspective – Marston et al.)
CORE TECHNOLOGICAL CONCEPTS & TERMINOLOGY : What does Architecture for data warehousing mean?
Architecture for data warehousing: includes the component parts and the relationships among the parts
Data sources, ETL software, data stores, data analysis tools & applications, users
(Article: Cloud Computing – The Business Perspective – Marston et al.)
WHAT ARE THE THREE CORE TECHNOLOGICAL CONCEPTS SHAPING CLOUD COMPUTING?
Virtualisation, Multitenancy, Web Service
(Article: Cloud Computing – The Business Perspective – Marston et al.)
THREE CORE TECHNOLOGICAL CONCEPTS SHAPING CLOUD COMPUTING: What is Visualisation?
Virtualisation: technology that hides the physical characteristics of computing platforms from users, instead presenting an abstract computing platform; can be configured on demand, maintained & replicated very easily
(Article: Cloud Computing – The Business Perspective – Marston et al.)
THREE CORE TECHNOLOGICAL CONCEPTS SHAPING CLOUD COMPUTING: What is Multitenancy?
Multitenancy: concept in which single instance of an application software serves multiple clients
(Article: Cloud Computing – The Business Perspective – Marston et al.)
THREE CORE TECHNOLOGICAL CONCEPTS SHAPING CLOUD COMPUTING: What is Web Service?
Web Service: software system designed to support interoperable machine-to-machine interaction over a network; help standardise interfaces between applications, making it easier for software client (web browser) to access server applications over a network
(Article: Cloud Computing – The Business Perspective – Marston et al.)
What are the DELIVERY MODELS OF CLOUD COMPUTING?
Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS)
(Article: Cloud Computing – The Business Perspective – Marston et al.)
DELIVERY MODELS OF CLOUD COMPUTING: What is Software as a Service (SaaS)?
Software as a Service (SaaS): application runs on the cloud, eliminating need to install and run application on client computer – enterprise-level apps (Salesforce, Netsuite, Googleapps) + personal applications (Gmail, Facebook, Twitter)
(Article: Cloud Computing – The Business Perspective – Marston et al.)
DELIVERY MODELS OF CLOUD COMPUTING: What is Platform as a Service (PaaS)?
Platform as a Service (PaaS): facilitates development and deployment of applications without cost & complexity of buying and managing the underlying hardware and software layers (eg Google App engine, Amazon’s Relational Database Services)
(Article: Cloud Computing – The Business Perspective – Marston et al.)
DELIVERY MODELS OF CLOUD COMPUTING: What is Infrastructure as a Service (IaaS)?
Infrastructure as a Service (IaaS): storage and compute capabilities are offered as service (Amazon’s S3 storage service)
(Article: Cloud Computing – The Business Perspective – Marston et al.)
WHAT ARE THE DEPLOYMENT MODELS WITHIN ORGANISATIONS?
public, privat, hybrid and Community Cloud