G-Cloud > About > Glossari
Glossary of Terms
  • wpsadmin
  • wpsadmin


Glossary of Terms


Back up: Copies of original data that enable them to be directly recovered in the event of loss.


Cloud Computing ICT services used online to access software, computing power and storage space. This is a model of providing services online which includes dynamically scalable resources provided by servers. Users do not need to have experience in using infrastructure of this sort which is now located in the cloud.


Data Center: This consists of computing systems and the necessary large-scale support infrastructure, such as telecom hardware and storage systems to enable large volumes of data to be processed. 
Demilitarized zone (DMZ): A network zone which allows servers with limited access to any in-house web infrastructure to be accessible via the web. 


E-Government: This means the introduction of ICTs into public administration to improve the services public agencies offer, to bolster democratic processes and to support citizen-oriented public policies.


Firewall: Technical equipment which oversees data circulation between the internet and the local/corporate network, operating as a protective filter against online attacks and unauthorized access.


Help-Desk: Support for users with problems that relate to data, applications or processes. Requests are recorded using a ticketing system.
High availability: This means a design that allows a service to operate continuously without errors.


IaaS (Infrastructure as a Service): This is a model for offering and using software where the provider offers virtual machines which the user configures and then uses as he wishes.
IBM Cognos Business Intelligence: A business application which offers easy access to cutting-edge data analysis techniques. This aids better data processing thereby benefiting businesses. The objective is to generate safe conclusions that enable proper decisions to be taken.


Load balancing: This means sharing network data traffic loads between a large number of servers which work for specific purposes so that the system can operate without interruption.


PaaS (Platform as a Service): This is a model for providing and using software whereby the provider allows users to develop their own applications based on programming tools on the virtual IT infrastructure.
Private Cloud: A type of cloud technology where the virtual network is tailored to meet an organization’s needs.
Public cloud: A type of cloud technology where infrastructure is accessible via the internet.


SaaS (Software as a Service): A model for providing and using software whereby users can use applications that run on the provider’s infrastructure.
Scalability: The ability to increase or decrease infrastructure requirements, such as computing resources, memory and storage space, depending on usage-based needs.
Server: A computer that runs the right software to facilitate users who have connected to it for some reason.
Service Level Agreement (SLA): An agreement between a provider and user of services which sets out the specifications for support services.
SLA reporting: Reports which outline whether the terms and conditions in the SLA were met.
Storage tier: This refers to the ability to store and analyze a large volume of data on various tiers outside of main memory. Data is placed on tiers depending on how frequently it is accessed.


Ticketing:  Reports about a specific problem and its status. All issues are answered separately and a log is held for each user.


Virtualization: Creating virtual infrastructure for IT systems where physical resources are made available in line with the specifications of the virtual systems created.
Virtual machines: This refers to hosting of virtual servers on central, high availability infrastructure.
Virtual firewall: A firewall that runs in a virtual environment.
Virtual Private Network (VPN): Remote access to infrastructure via a highly secure virtual network using encrypted communication.