Chapter 1: IT Infrastructure

Infrastructure-as-a-Service (IaaS) Examples

- Amazon web services - Google Compute Engine(GCE)

Software-as-a-Service(SaaS) Examples

- BigCommerce - Dropbox

Current computing technologies

- Client server based computing - Supercomputing - Cluster computing - Grid computing - Cloud computing

IT Infrastructure components

- Computer hardware - Operating system platforms - Enterprise software applications - Data management and storage - Networking - Internet platforms - Consulting system integration services

Goals of IT Service Management Processes

- Customer sentric - Availability and stability of services - Improvised communication - Efficiency of internal processes - Cost of services

Platform-as-a-service(PaaS) Examples

- Heroku - OpenShift

Cloud computing services can be divided into three categories

- Infrastructure-as-a-Service(IaaS) - Platform-as-a-service(PaaS) - Software-as-a-Service(SaaS)

3 basic characteristics that differentiate cloud computing services from traditional hosting.

- It is sold on demand - Elastic service - Fully managed by the service provider

Patern for E-Business

-Business pattern -Integration pattern -Application pattern -Run time pattern

Examples of Service Support

-Configuration Management -Incident Management -Problem Management -Change Management -Release Management

Common Task of IT System Management

-Maintaining hardware inventory -Storage Management -Security Management -Capacity Management -Anti-virus and anti malware management

Examples of Service Delivery

-Service Level Management -Financial Management -IT Service Continuity Management -Capacity Management -Availability Management

Five key volumes of ITIL version 3

-Service Strategy -Service Design -Service Transition -Service Operation -Continual Service improvement

Four Challenges in IT Infrastructure Management

-Suitability to the organisation -Low cost and high quality -Adaptability in changeable environment -Decrease business risk

Definition of telnet

A communication program which enables a computer to function as a terminal program in a TCP/IP network.

Definition of Client server based computing

A computing architecture in which software components interact with each other to provide a system that can be designed for and used by multiple users.

Definition of Grid computing

A form of distributed computing and refers to the use of several computers to solve a single problem at the same time.

Definition of computer software

A program which instructs computer hardware regarding the steps to be carried out.

Definition of file transfer over the internet

An application protocol which runs on top of the TCP/IP protocols.

Definition of Cloud computing

Delivering hosted service over the internet which provide common business applications online that can be accessed using a web browser while storing software and data on the servers.

Definition of computer hardware

Do all the physical of work of computers.

Function of service strategy?

Helping IT organisations to improve and develop long term.

Definition of ITIL

ITIL (Information Technology (IT) Infrastructure Library) is a framework designed to standardize the selection, planning, delivery and maintenance of IT services within a business.

Definition of Organization Readiness Assessment

It ensures that all the constraint and barriers to organizational re engineering are evaluated and are taken into consideration during the design and implementation processes.

Definition of Customer Centric

It is intended to ensure that IT services offered by an organization are aligned with the needs of customers and users.

Definition of Business Impact Assessment

Process conducts a series of what if business impact analyses during the organizational design phase.

Definition of Business Driver Assessment

Process that identifies the business drivers that lead to the development of a re-engineering strategy

Service Transition

Provide guidance on managing the many aspects of service changes, preventing undesired consequences while allowing for innovation.

Definition of Structure Model Assessment

Select the organizational design that is not aligned with business strategy but also fits to the culture of the organization.

Definition of IT Infrastructure

The composite of hardware, software, network resources and services required for existence, operation and management of an enterprise IT environment.

Definition of Supercomputing

The computation-intensive software applications performed on the world's fastest computer.

Definition of hypertext documents

The text which appears on computer with references to other documents that a reader can access with a mouse click or by pressing keys.

Definition of Cluster computing

The use of a group of tightly coupled computer systems which work together closely to accomplish computational tasks.

Definition of Business System Context Diagram

Used to identify a business system which involves a set of business processes which is divided into 4 categories that is self-service, collaboration, information aggregation, and extended enterprise.

Definition of Use - Case Diagram

Used to identify the primary elements (actors) and processes (use-cases) that form the system.