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Cloudflare Fundamentals
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Review the definitions for terms used across Cloudflare’s documentation.

accountAccounts group one or more members together with specific roles or permissions. Accounts can be associated with any number of domains.
API key

An API key is unique to each Cloudflare user and used to confirm identity when using the Cloudflare API.

API tokenAPI tokens authorize access to specific Cloudflare dashboard pages, accounts, and zones. API tokens are associated to the user that created them.
backup codesBackup codes allow restoration of Cloudflare account access outside the normal two-factor authentication process. A backup code becomes invalid after use.
cloudA network of remote servers used to store and maintain data.
content delivery network (CDN)A geographically distributed group of servers which work together to provide fast delivery of Internet content.
content security policy (CSP)An added layer of security that helps detect and mitigate certain types of attacks such as cross-site scripting (XSS) attacks.
creditAn amount applied to a specific Cloudflare account as credit for recurring subscriptions or plan payments. The Cloudflare billing system automatically applies credits in the next billing cycle.
data centerA physical location where servers run and other IT operations are hosted.
denial-of-service (DoS) attackA DoS attack is a type of cyber attack in which an attacker aims to render a computer or other device unavailable to its intended users by interrupting the device’s normal functioning.
distributed denial-of-service (DDoS) attackA DDoS attack is a malicious attempt to disrupt normal traffic of a targeted server, service, or network by overwhelming the target or its surrounding infrastructure with a flood of Internet traffic.
domainThe domain name of your application on Cloudflare.
edge response status codeHTTP response code sent from Cloudflare to the client (end user). The Cloudflare dashboard Analytics app uses the edge response status code.
featureA feature is a setting in the Cloudflare dashboard that corresponds to functionality within a Cloudflare product or API.
HTTP requestAn HTTP request is the way Internet communications platforms such as web browsers ask for the information they need to load a website.
InternetThe Internet is a global system of computer networks that provides a wide range of information and communication facilities.
IP addressIP stands for Internet Protocol, which is the set of rules that makes it possible for devices to communicate over the Internet. With billions of people accessing the Internet every day, unique identifiers are necessary to keep track of who is doing what. The Internet Protocol solves this by assigning IP numbers to every device accessing the Internet. Every assigned number is an IP address.
member or userA member or user is an email account in Cloudflare that you can grant access to your organization account. Members belonging to multiple accounts can select which account to manage via the Cloudflare dashboard.
origin requestAn origin request is a request served from the origin server.
origin response status codeAn origin response status code is an HTTP response code sent from the origin server to Cloudflare.

Plans distinguish the breadth of Cloudflare features accessible to a specific domain. Plan options include Free, Pro, Business, or Enterprise.

protocolA protocol is a set of rules governing the exchange or transmission of data between devices.
redirectURL redirects navigate the user from a source URL to a target URL using a given HTTP status code. URL redirection is also known as URL forwarding.
rolesAuthorize which Cloudflare products and features a member is allowed to access in a Cloudflare account. Learn more about roles.
Service Level Agreement (SLA)

An SLA is a contractual obligation for Cloudflare to maintain a specific level of service. Read the Service Level Agreement (SLA) for the Cloudflare Business plan. Enterprise customers refer to the Enterprise SLA provided with their contract.

trafficTraffic is the data sent and received by visitors to a website. Cloudflare serves and protects this data as it passes through the Cloudflare network.
two-factor authentication (2FA)

Two-factor authentication (2FA) is a security process in which a user provides two different authentication factors to verify their identity. In addition to something you know, typically your password, 2FA adds an extra layer of security to user logins by requiring users to also present something they have, such as Yubikey or a one-time login code, or something you are, such as a fingerprint.

It adds an extra layer of security to user logins by requiring users to present two or more separate pieces of evidence (factors) that establish their identity.

websiteA website is a collection of web pages and related content that is identified by a common domain name and published on at least one web server.
zoneA zone is a portion of DNS namespace that is managed by a specific organization or administrator.