# ThousandEyes Glossary ## A-B-C ### Account group A ThousandEyes account group within an [organization](#organization) represents a business unit, subsidiary, or other defined customer group such as local branch or IT department. See [What Is an Account Group?](https://docs.thousandeyes.com/product-documentation/user-management/account-groups/what-is-an-account-group) for more information. ### Active alert An alert is considered active when an associated test has failed or experienced errors for a specified number of consecutive test rounds, per the associated [alert rule](#alert-rule). See [Getting Started with Alerts](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-alerts) for more information. ### Activity log The activity log provides a history of actions by the ThousandEyes users in your organization, including test creation, updates, deletions, login, logout, and other activities. The activity log also displays a timestamp and user metadata for each event. See [Working With the Activity Log](https://docs.thousandeyes.com/product-documentation/user-management/user-activity/working-with-the-activity-log) for more information. ### Affected test In [Internet Insights](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-internet-insights), an affected test is one of your ThousandEyes tests that is indirectly impacted, or could potentially be impacted, by an outage elsewhere in Internet Insights. A test can be affected even if that test is not showing any obvious errors or triggering alerts. See [My Affected Tests](https://docs.thousandeyes.com/product-documentation/internet-insights/using-alerts-and-dashboards-with-internet-insights/my-affected-tests) for more information. ### Agent Agent refers to ThousandEyes software packages (servers) installed at specific global locations, used by customers to run tests against specified domains or targets. Agents are also referred to as global vantage points. Enterprise Agents are installed and maintained by customers inside their own networks, while Cloud Agents are maintained by ThousandEyes and are available to all customers. Endpoint Agents run on end-user computers and thus don't necessarily have a fixed location. See [Global Vantage Points](https://docs.thousandeyes.com/product-documentation/global-vantage-points) for more information. ### Agent cluster Agent clusters are multiple ThousandEyes Cloud and Enterprise Agents operating together to run ThousandEyes tests from a single location. Clustering simplifies the agent selection process and facilitates load balancing for new tests. You can manage clusters for your own Enterprise Agents. For more information, see [Working with Enterprise Agent Clusters](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/managing/working-with-enterprise-agent-clusters). ### Alert An alert in ThousandEyes is an on-screen notification that one or more of your ThousandEyes tests is currently exceeding a defined error threshold. You can also set up alerts for [WAN Insights](https://docs.thousandeyes.com/product-documentation/wan-insights) when certain key indicators are outside of specified thresholds. Alerts are assigned to tests through [alert rules](#alert-rule). ThousandEyes alerts can be sent to third-party systems using [notifications](#notification). See [Getting Started with Alerts](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-alerts) and [Alerts](https://docs.thousandeyes.com/product-documentation/alerts) for more information. ### Alert rule An alert rule is a condition or a set of conditions that you configure in order to highlight or be notified of events of interest in your ThousandEyes tests. When an alert rule’s conditions are met, the associated alert is triggered and the alert becomes [active](#active-alert). It remains active until the alert is cleared. Alert rules are reusable across multiple tests. See [Getting Started with Alerts](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-alerts) for more information. ### Alert trigger An alert trigger is the element that a specific test type is set to examine. Some of these elements are: * For Cloud and Enterprise Agent tests, the alert is triggered by agents. * For Endpoint Agent tests, the alert is triggered by visited sites or by Endpoint Agents. See [Local Alert Conditions](https://docs.thousandeyes.com/product-documentation/alerts/creating-and-editing-alert-rules/global-and-location-alert-conditions#location-alert-conditions) for more information. ### Application In [WAN Insights](https://docs.thousandeyes.com/product-documentation/wan-insights), an application (application category) is a pre-selected bundle of applications within WAN Insights, such as Voice or Google Workspace, that share similar characteristics. See [Application Categories](https://docs.thousandeyes.com/product-documentation/wan-insights/how-it-works/application-categories) and [Adding Business-Critical Applications to WAN Insights](https://docs.thousandeyes.com/product-documentation/wan-insights/tasks/custom-application-categories) for more information. ### Bell Notification In the ThousandEyes app, the status bar at the top of the page shows a bell icon. This menu provides a list of any informational notifications pertaining to your ThousandEyes account and application. You can clear these notifications by clicking the "x" button next to a single item in the list, or you can click "dismiss all". Available integrations and test recommendations will also appear here. The bell notification area also alerts you if have any tests in a draft state. * For more information about the bell notifications menu, see [Notification of Upgrades, Maintenance and Outages](https://docs.thousandeyes.com/product-documentation/getting-started/notification-of-upgrades-maintenance-and-outages) * See the [Notifications](https://docs.thousandeyes.com/product-documentation/getting-started/thousandeyes-glossary#notifications) entry for other kinds of notifications. ### Built-in dashboard Refers to ThousandEyes system-defined [dashboards](#dashboard). Built-in dashboards are not editable. However, you can copy a built-in dashboard and make changes to the copy. See [Dashboards](https://docs.thousandeyes.com/product-documentation/dashboards) and [Getting Started with Dashboards](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-dashboards) for more information. ### Catalog In [Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights), the catalog is a database of internet service providers, categorized by provider name, provider type, and network identifier. See [Configuring Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights/int-config) for more information. ### Cleared alert Cleared is a signal that an [alert](#alert) is no longer [active](#active-alert), meaning that the conditions triggering it are no longer in effect. You can also manually clear an alert, or the platform can auto-clear it if an agent fails to send data for 12 hours. See [Getting Started with Alerts](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-alerts) for more information. ### Cloud Agent A Cloud Agent is a ThousandEyes software agent that is available immediately to customers for running tests, with no administrative responsibilities. Cloud Agents provide globally distributed vantage points throughout the internet and are maintained by ThousandEyes. See [Cloud Agents](https://docs.thousandeyes.com/product-documentation/global-vantage-points/cloud-agents) for more information. ### Credentials repository The credentials repository is used in ThousandEyes Browser Synthetics transaction tests to store and control access to login credentials, while keeping secure strings, such as passwords, hidden. See [Working With Secure Credentials](https://docs.thousandeyes.com/product-documentation/browser-synthetics/transaction-tests/getting-started/working-with-secure-credentials) for more information. ### Custom webhook Custom webhooks in ThousandEyes are used to send notifications about ThousandEyes [alerts](#alert) to external systems. See [Custom Webhooks](https://docs.thousandeyes.com/product-documentation/integration-guides/custom-webhooks) for more information. ## D-E-F ### Dashboard ThousandEyes dashboards show customized live views of your test data, as well as Internet Insights collective intelligence. For example, you can set up a dashboard based on Internet Insights that shows application outages related to your main SaaS provider, alongside internet outages that affect your users’ ability to access those domains. See [Dashboards](https://docs.thousandeyes.com/product-documentation/dashboards) for more information. ### Device layer ThousandEyes' device-layer monitoring uses Enterprise Agents to poll your network devices using the Simple Network Management Protocol (SNMP). See [Device Layer](https://docs.thousandeyes.com/product-documentation/device-layer) section for more information. ### Dynamic test With dynamic tests, you can evaluate a desktop application's performance without manually setting up an IP address or hostname. These tests function similarly to ThousandEyes agent-to-server scheduled tests, except that with dynamic tests, ThousandEyes selects the endpoints to monitor. Used with Endpoint Agents. See [Dynamic Tests](https://docs.thousandeyes.com/product-documentation/global-vantage-points/endpoint-agents#dynamic-tests) for more information. ### Embedded widget An embedded widget is a ThousandEyes dashboard [widget](#widget) that is referenced in the HTML source code of an external web page to make information available to viewers outside of your ThousandEyes organization. The embedded widget provides the same information via the external web page without requiring a ThousandEyes login. See [Embedding Dashboard Widgets in External Web Sites](https://docs.thousandeyes.com/product-documentation/dashboards/embedding-dashboard-widgets-in-external-web-sites) for more information. ### Enabled Enabled applies to tests, agents, and alert rules. * A ThousandEyes test that is enabled is actively running on one or more agents. Tests that are configured but not enabled do not consume units. * An alert rule is enabled when it is applied to a particular test. * A ThousandEyes agent is enabled when it is available for tests. If you disable an Enterprise Agent, you cannot run tests on it until you re-enable it. See [Working with Test Settings](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/working-with-test-settings) for more information. ### Endpoint Agent The ThousandEyes Endpoint Agent is an application that is installed on end-user computers to measure network and application performance from the vantage point of a regular end user. Endpoint Agents can be deployed on- and off-premises to collect performance measurements from almost every possible user environment. Endpoint agents provide you with the ability to identify and diagnose end-user issues in near real-time. See [Endpoint Agents](https://docs.thousandeyes.com/product-documentation/global-vantage-points/endpoint-agents) for more information. ### Endpoint pair Within [WAN Insights](https://docs.thousandeyes.com/product-documentation/wan-insights), an endpoint pair refers to a connection between two routers located at different sites. From a data standpoint, WAN Insights endpoints are entities to which network traffic is routed, or which produce or consume traffic. Examples of endpoints include edge routers, SaaS data centers, and routing prefixes. See [Sites, Routers, Paths, and Interfaces](https://docs.thousandeyes.com/product-documentation/wan-insights/how-it-works/sites-routers-paths-interfaces) for more information. ### Enterprise Agent An Enterprise Agent is ThousandEyes software running on a Linux platform deployed and managed by a ThousandEyes customer for their exclusive use, to test targets from inside the customer's own network, or from within infrastructure under the customer's control. By contrast, ThousandEyes [Cloud Agents](#cloud-agent) are managed by ThousandEyes, shared by all customers, and are used for outside-in network testing. See [Enterprise Agents](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents) for more information. ## G-H-I-J-K ### Impacted user Within WAN Insights, an impacted user refers to the end user of a business application within an enterprise network, who may be impacted by poor network performance. See [WAN Insights Introductory Tour, Part 1](https://docs.thousandeyes.com/product-documentation/wan-insights/wan-insights-quick-start/wan-insights-tour-part-1) for more information. ### Instant test An instant test is done using the **Run Once** button when configuring a new ThousandEyes Cloud or Enterprise Agent test, to validate the test configuration. Instant tests consume [units](#unit-unit-consumption), and thus they count towards monthly unit consumption. See [Scheduled Versus Instant Tests](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/scheduled-v-s-instant-tests) for more information. ### Integration ThousandEyes integrations allow you to use the ThousandEyes platform with other tools, to make the best use of ThousandEyes data for your organization. A common integration is to collect ThousandEyes [alert](#alert) notifications and display them in other communication systems such as Slack or PagerDuty. * See [Custom-Built Integrations](https://docs.thousandeyes.com/product-documentation/integration-guides/custom-built-integrations) for ways to integrate ThousandEyes with other products; for example, displaying ThousandEyes test data in AppDynamics. ### Internet Insights ThousandEyes Internet Insights uses the collective intelligence of ThousandEyes’ entire agent network to show outages that may affect you, even if you’re not directly testing against those targets yourself. If enough ThousandEyes agents testing towards the same target report problems, ThousandEyes makes the inference that the cluster of errors represents a real outage and displays it on the **Internet Insights > Outages** map. For a more complete list of terms related to Internet Insights, see the Internet Insights [Terminology](https://docs.thousandeyes.com/product-documentation/internet-insights/int-terminology) page. ### Interval A test interval is the frequency at which a test is run. For example, every two minutes or every hour. Intervals are configured as part of each test’s settings. See [Working with Test Settings](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/working-with-test-settings) for more information. ## L-M-N-O ### Labels (deprecated) Labels were a legacy way to organize and filter tests, agents, endpoint agents, and dashboard groupings. Labels have been upgraded to [Tags](#tags). All existing labels were automatically migrated to the new tagging system. See [Tags](#tags). ### Monitored domain set A monitored domain set consists of domains that you want end-user performance monitoring information about. The best practice is to use business-relevant domains for tools and sites that your end users access. Used in **Endpoint Agents > Browser Session Settings**. See [Configure Browser Sessions](https://docs.thousandeyes.com/product-documentation/end-user-monitoring/browser-session/configure-browser-session) for more information. ### Metrics In a ThousandEyes test [view](#view), metrics are different measures that can be selected using a drop-down filter list. For example, a page load test might have page load time as one of the available metrics. See [Getting Started with Views](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/viewing-data/getting-started-with-views) for more information. ### Notification A notification generally refers to a message sent automatically upon certain events to your email, PagerDuty, Slack, AppDynamics, ServiceNow, or other tool configured through a [custom webhook](#custom-webhook). Notifications apply to [alerts](#alert), WAN Insights [recommendations](#recommendation), usage limit notifications, and to ThousandEyes documentation updates. For more information: * See [Integrations](https://docs.thousandeyes.com/product-documentation/integration-guides) for ways to send automatic notifications from ThousandEyes alerts to third-party systems, including both custom webhooks and pre-configured third-party integrations. * See [Email Notifications](https://docs.thousandeyes.com/product-documentation/wan-insights/tasks/email-notifications) for information about notifications for WAN Insights recommendations. * See the entry [Bell Notifications](https://docs.thousandeyes.com/product-documentation/getting-started/thousandeyes-glossary#bell-notifications) for information about the notifications that appear on the status bar when you are logged into the ThousandEyes app. ### Organization An organization within ThousandEyes represents the overall billable entity. See [Role-Based Access Control](https://docs.thousandeyes.com/product-documentation/user-management/rbac/role-based-access-control-explained) for more information. ### Outage Outages within Internet Insights refer to global events that impact a large number of servers or Autonomous Systems (AS). * An application outage is an event for which some or all servers that belong to the same application are failing at the same point in time. * A network outage is an event with 100% packet loss in the same Autonomous System (AS) and the same metropolitan location during the same period of time. See [Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights) for more information. ### Overage An overage is the result of exceeding your monthly unit allowance. Overages can be enabled or disabled for a particular customer. Customers with overages disabled are prevented from using more units than their monthly allowance. For those customers who have overages enabled, the overage may or may not be billed at the end of the month, depending on the customer's plan. See [Overages](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing/about-usage-units#overages) for more information. ## P-Q-R ### Path Quality The WAN Insights Path Quality metric aggregates network performance measures (loss, latency, and jitter), and expresses the result as a single weighted percentage. This percentage expresses the likelihood of violating a defined quality threshold in the near future, which is a risk to be mitigated. See [Understanding Quality](https://docs.thousandeyes.com/product-documentation/wan-insights/how-it-works/understanding-quality) for more information. ### Package In [Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights), a package is a collection of Internet Insights providers with the same type and region, for example North America ISPs. Customers license a package in order to display outages originating from the providers included in the package. See [Configuring Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights/int-config) for more information. ### Package license For Internet Insights, a package license allows you to select a group of global providers to monitor. You can purchase multiple licenses and re-assign them as needed. See [Configuring Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights/int-config) for more information. ### Private snapshot A private snapshot is a way to permanently save a time segment of test data for your own account group. Similar to a [snapshot](#snapshot), a private snapshot is specific to a particular test, is private to your account group, and does not expire. Private snapshots were formerly referred to as *saved events*. See [Retaining Data Beyond the 90-Day Limit](https://docs.thousandeyes.com/product-documentation/user-management/user-activity/retaining-data-beyond-the-90-day-limit) for more information. ### Provider type Within Internet Insights, a provider type refers to the primary service focus of various global connectivity providers, for example SaaS or ISP. For providers that might offer more than one type of service, the provider type is determined in part by the type of data that ThousandEyes is able to collect through various types of testing. See [Configuring Internet Insights](https://docs.thousandeyes.com/product-documentation/internet-insights/int-config) for more information. ### Quality of Experience The Quality of Experience (QoE) score in WAN Insights is a calculated score based on aggregated Quality of Service (QoS) measurements for loss, latency, and jitter. Note that the QoE score indicates a level of risk, not an actual network outage. See [Understanding Quality](https://docs.thousandeyes.com/product-documentation/wan-insights/how-it-works/understanding-quality) for more information. ### Quality of Service Quality of Service (QoS) in WAN Insights measures network performance at the circuit level, between endpoint pairs. Quality of service is measured separately for loss, latency, and jitter, as a weighted percentage that expresses how close each performance measure is to its threshold. See [Understanding Quality](https://docs.thousandeyes.com/product-documentation/wan-insights/how-it-works/understanding-quality) for more information. ### Quota Quotas are used to ensure that [unit](#unit-unit-consumption) consumption, either at the [organization](#organization) or the [account group](#account-group) level, does not exceed a defined monthly cap or threshold. If the quota is exceeded, you will not be able to set up new scheduled tests, and/or some scheduled tests may be automatically disabled to stop unit consumption. See [Setting Quotas](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing/setting-quotas) for more information. ### Real User Test The real user test is an Endpoint Agent feature to track a website's performance that is included within a monitored domain set. A real user test records both in-browser and network performance metrics. See [Real User Tests](https://docs.thousandeyes.com/product-documentation/end-user-monitoring/browser-session) for more information. ### Recommendation #### Context: Test Recommendations For some integrations with third-party products, the ThousandEyes platform can offer *recommended tests*. Once you have set up the integration, ThousandEyes can suggest useful tests for monitoring the services you rely on. For more information, see * [Test recommendations with AWS API Gateway](https://docs.thousandeyes.com/product-documentation/integration-guides/custom-built-integrations/aws-for-test-recs) * [Test recommendations with AppDynamics](https://docs.thousandeyes.com/product-documentation/integration-guides/custom-built-integrations/appdynamics-for-test-recs) #### Context: WAN Insights A recommendation from WAN Insights refers to making network path or traffic routing changes at a particular network site in order to improve performance for a particular application category. See [Understanding Recommendations](https://docs.thousandeyes.com/product-documentation/wan-insights/how-it-works/understanding-recommendations) for more information. ### Recorder The ThousandEyes Recorder provides an integrated development environment (IDE) for creating, validating, and enhancing transaction test scripts based on your browser actions. See [ThousandEyes Recorder](https://docs.thousandeyes.com/product-documentation/browser-synthetics/transaction-tests/getting-started/thousandeyes-recorder) for more information. ### Role Users are assigned to roles, which have a set of permissions applied. The permissions determine how much functionality the user can partake of on the ThousandEyes platform. ThousandEyes has three default roles, though customers can create customized roles within their organization, too. See [Role-Based Access Control](https://docs.thousandeyes.com/product-documentation/user-management/rbac) for more information. ## S-T ### Shared by ThousandEyes *Shared by ThousandEyes* refers to built-in test configurations provided by ThousandEyes. You can choose to activate or enable these tests for your own use. For more information, see [Shared by ThousandEyes](https://docs.thousandeyes.com/product-documentation/getting-started/getting-started-with-cloud-and-enterprise-agent-tests#shared-by-thousandeyes). ### Snapshot Snapshots apply to [dashboards](#dashboard) and also to test data. ### Tags Tags are key-value pairs used to organize and filter tests, agents, endpoint agents, dashboards, and Internet Insights providers. You can apply tags to group related resources and use tag selectors in filters, alert rules, and dashboards. Tags replace the legacy [Labels (deprecated)](#labels-deprecated) feature. Manage tags from **Manage > Tags**. See [Working with Dashboard Tags](https://docs.thousandeyes.com/product-documentation/dashboards/dashboard-labels) and [Working with Agent Settings](https://docs.thousandeyes.com/product-documentation/global-vantage-points/working-with-agent-settings) for more information. * Dashboard snapshots represent a specific time range of the dashboard’s data. Snapshots can be created on demand, or created automatically according to a schedule and emailed to a list of recipients. See [Dashboard Sharing and Snapshots](https://docs.thousandeyes.com/product-documentation/dashboards/dashboard-shares-snapshots) for more information. * For test data, the snapshot feature allows you to provide a URL to a read-only ThousandEyes test results web page at a specified point in time, viewable by anyone who has the link. See [Sharing Test Data](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/sharing-test-data) for more information. * A private snapshot (formerly called a saved event) is visible only within your account group. ### Template A template is a suite of ThousandEyes resources designed for monitoring a target, based on the best practices for that particular type of target. See [Templates](https://docs.thousandeyes.com/product-documentation/tests/templates) for more information. ### Test A ThousandEyes test is a synthetic network probe with a user-specified target that runs at regular intervals from a ThousandEyes software agent. Tests are user-configurable and consume [units](#unit-unit-consumption). * See [Tests](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests) for information on scheduled tests run from Cloud or Enterprise Agents. * See [Automated Session Tests](https://docs.thousandeyes.com/product-documentation/end-user-monitoring/automated-session-test) and [Scheduled Tests](https://docs.thousandeyes.com/product-documentation/end-user-monitoring/scheduled-tests) for information on tests run from Endpoint Agents. ### Test layer A ThousandEyes test layer refers to layers of operation, but is not the same as the OSI 7-layer network model or the TCP/IP 4-layer model. The ThousandEyes test layers are Routing, Network, DNS, Web, and Voice. Test data over time is displayed in test [views](#view). Multiple test layers may be available within a single test view. See [Tests](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests) for more information. ### Test round A test round refers to a single measurement performed by a ThousandEyes scheduled test, as executed by one or more ThousandEyes agents, for a single point in time. For example, for a test running at 5-minute intervals, a single test round might show test results for 12:00 midnight UTC, while the next round would show results for 12:05 am UTC. See [Scheduled vs Instant Tests](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/scheduled-v-s-instant-tests) for more information. ### Timeout A test timeout specifies how long to wait before assuming that the test target is unresponsive. See [Working with Test Settings](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/working-with-test-settings) and [Test Type Layers and Units](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing/test-layers-units) for more information. ### Transaction test script A transaction test script is used in ThousandEyes Browser Synthetics transaction tests that simulate a multi-step user journey through a web site, for example online shopping. For more information, first review the [ThousandEyes Recorder](https://docs.thousandeyes.com/product-documentation/browser-synthetics/transaction-tests/getting-started/thousandeyes-recorder) page, and then review the entire section under [Transaction Test Developer Guide](https://docs.thousandeyes.com/product-documentation/browser-synthetics/transaction-tests/development-guide). ## U-V-W-X-Y-Z ### Unit, unit consumption Units are the measure by which tests run on Cloud or Enterprise Agents are charged. Throughout the month, configured tests consume units against the customer's monthly unit allowance, which in turn impacts customer billing. Generally, customers cannot consume more units than their plan allows. Each test consumes a certain number of units based on the test type, interval, timeout, and the number and type of ThousandEyes agents running the test. * See [About Units](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing/about-usage-units) and [Calculating Units](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing/calculating-units) for more information. * See [Usage-Based Billing](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing) and [FAQs: Usage](https://docs.thousandeyes.com/product-documentation/user-management/usage-and-billing/usage-faqs) for more information. ### User A ThousandEyes user is someone registered to use the ThousandEyes user interface and/or the API. See [Role-Based Access Control](https://docs.thousandeyes.com/product-documentation/user-management/rbac) for more information. ### View A ThousandEyes view refers to test data shown on a timeline. Every test in ThousandEyes has a **Views** screen, and each view has multiple view layers that represent different levels of networking, from the underlay all the way through HTTP and voice layers. There are views available under **Cloud & Enterprise Agents**, **Endpoint Agents**, **Devices**, and **Internet Insights**. For information on the various view types, see: * [Getting Started with Views](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/viewing-data/getting-started-with-views) * [Single Agent View](https://docs.thousandeyes.com/product-documentation/end-user-monitoring/viewing-data/single-agent-view) * [Multi-Service Views](https://docs.thousandeyes.com/product-documentation/internet-and-wan-monitoring/tests/multi-service-views) * [Internet Insights Views Screen](https://docs.thousandeyes.com/product-documentation/internet-insights/int-screens/int-views) ### WAN Insights ThousandEyes WAN Insights is a predictive network optimization tool that uses a statistical model to examine historical data from your Cisco SD-WAN, in order to find the best paths for application traffic. For a more complete list of terms related to WAN Insights, see the [WAN Insights Terminology and Reference](https://docs.thousandeyes.com/product-documentation/wan-insights/wan-insights-terminology) page. ### Widget Widgets are customizable visual data displays on ThousandEyes [dashboards](#dashboard). Widget types include tables, bar and pie charts, time series, color grids, and maps. You can [embed](#embedded-widget) them on other web pages as well. See [Dashboard Widgets](https://docs.thousandeyes.com/product-documentation/dashboards/dashboard-widgets) and [Embedding Dashboard Widgets in External Web Sites](https://docs.thousandeyes.com/product-documentation/dashboards/embedding-dashboard-widgets-in-external-web-sites) for more information.