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Online banking

A service offered by banks that allows account holders to view their account information online and carry out various financial transactions.

Online forum

An online message board where people can share their ideas and views.

Open source software

Software that is available to download free of charge, e.g. OpenOffice.org, which is a suite of applications.

Optical Media

Optical media such as the compact disk (CD) - are storage media that hold content in digital form and that are written and read by a laser; these media include all the various CD and DVD variations, as well as optical jukeboxes and autochangers.

Outsourcing

Using an external service provider to carry out a business function.

Overheads

The ongoing expenses of operating a business, e.g. rent, fuel bills, salaries.