A screen grab, also known as screenshot, is an image of that which is displayed on the monitor, which can be saved and/or printed.

A screen reader is a software programme that reads out the content of that which is displayed on the monitor. This software is predominantly designed for visually impaired users.

Search Engine Optimization (SEO) covers the process of making web pages spider-friendly so search engines can read them, and making web pages rank highly in search engines for relevant terms.

The role assigned to an application or programme when it provides a service to another application and supplies resources or resource manifestations. This application or programme receives connections to facilitate service requests by sending back responses.

Standard Generalized Markup Language (SGML) is a standardized markup language for the descriptive markup of documents. HTML and its possible precursor, XML, are both SGML subsets.

A sitemap is a web page containing links to all the pages in a site within a hierarchical structure. It functions like a table of contents to help users find what areas are available on the site.

Simple Mail Transfer Protocol (SMTP) is used for sending email between servers. The majority of email systems use SMTP to send messages that are retrieved on an email client using POP or IMAP which are protocols used to retrieve e-mail from a mail server.

Structured Query Language (SQL) is a standardized database access language used for creating, updating and managing Relational Database Management Systems (RDBMS).

Secure Sockets Layer (SSL) is a cryptographic security protocol for commercial transactions and communication over TCP/IP networks, such as the Internet. It provides server authentication, data encryption, and data integrity.

Stress testing is the process of establishing the ability of a computer, network, program or device to function efficiently under strenuous conditions. This process involves the simulation of an unfavourable environment by attempting to hack, infect, flood and overload the system.