Mistakes in code that keep a website or program from working properly.

A byte is the smallest addressable unit of memory in a computer, commonly made up of eight binary digits.

Where data is not stored locally on your own computer, but is spread out among a number of remote servers accessible through the Internet. Services like Google Docs and Gmail are examples of cloud computing—you are interacting with data on your home computer that is stored externally in “the cloud.”

Provide content-delivery-network services, DDoS mitigation, Internet security and distributed domain-name-server services. Cloudflare’s services sit between a website’s visitor and the Cloudflare user’s hosting provider, acting as a reverse proxy for websites.

Computer code is a set of rules or instructions that tells a computer what you want it to do. Coding, or programming, is a way of writing instructions for computers that bridges the gap between how humans can express themselves and how computers actually work.

A small piece of data sent from a website and stored on the user’s computer by the user’s web browser while the user is browsing. Cookies were designed to be a mechanism for websites to remember information (such as items in a shopping cart) or to record the user’s browsing activity.

CSV is a simple file format used to store tabular data, such as a spreadsheet or database. Files in the CSV format can be imported and exported from programs that store data in tables, such as Microsoft Excel or OpenOffice Calc. CSV stands for “comma-separated values”.

Downtime and uptime describe how long a website, computer or other system has been working (uptime) or not working (downtime).

The Internet is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business and government networks, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such …

An Internet service provider is an organisation that provides services for accessing, using or participating in the Internet. ISP’s can be organised in various forms, such as commercial, community-owned, non-profit or privately owned.

Micromobility refers to a range of small, lightweight vehicles operating at speeds typically below 25 km/h (15 mph) and driven by users personally (unlike rickshaws). Micromobility devices include bicycles, e-bikes, electric scooters, electric skateboards, shared bicycles, and electric pedal-assisted (pedelec) bicycles.

Often used for payments, NFC transmits data to enable two devices to communicate with each other. To work, both devices must contain NFC chips and be placed very close together.

Open source is a term that originally referred to open source software (OSS). Open source software is code that is designed to be publicly accessible—anyone can see, modify, and distribute the code as they see fit. Open source software is developed in a decentralized and collaborative way, relying on peer review and community production. Open …

An operating system is the most important software that runs on a computer. It manages the computer’s memory and processes, as well as all of its software and hardware. It also allows users to communicate with the computer without knowing how to speak the computer’s language.

PSD2 is a European regulation for electronic payment services. It seeks to make payments more secure in Europe, boost innovation and help banking services adapt to new technologies.

The trademark for a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached.

The practice of designing websites so that they adapt easily to different-sized devices like phones, tablets, wearables etc. If you’re able to visit a website on your phone and it looks just as proportional and pretty as it does on your computer, it’s an example of responsive web design.

A feed for the estimated time of arrival of a vehicle to a particular stop. SIRI-SM can also include further information about vehicles such as the vehicle’s location.

A period of time (e.g. 14 days) in which an agreed-upon set of development tasks takes place. Sprints are short blocks of development time that allow new functionality and improvements to be in customers’ hands as quickly as possible.

Web servers are computers used to store websites, online apps, documents, pictures or other data, and can be accessed through the Internet by way of applications like web browsers or file transfer protocol (FTP) clients. When you visit a website with the browser on your computer or phone, you are requesting it from a web …

An information system where documents and other web resources are identified by URLs, such as https://www.discoverpassenger.com, which may be interlinked by hypertext, and are accessible over the Internet. The resources of the WWW are transferred via the Hypertext Transfer Protocol (HTTP) and may be accessed by users by a software application called a web browser.

A common type of file compression. Zipping one or more files creates a compressed archive that takes up less disk space than the uncompressed version. It is useful for backing up files and reducing the size of data transferred over the Internet.