ConfigCat

# ConfigCat Docs > Learn more on how to use ConfigCat Feature Flags. ## Getting Started - [Getting Started](https://configcat.com/docs/getting-started.md): This is a step-by-step guide on how to get started with ConfigCat feature flags and on how to implement feature flags in an application. ## Main Concepts - [Main Concepts](https://configcat.com/docs/main-concepts.md): This page explains the basics of feature flags and how to use them. Displays how configs, products and settings are organized within the feature flag service. ## Targeting - [Feature Flag Evaluation](https://configcat.com/docs/targeting/feature-flag-evaluation.md): This document offers an in-depth explanation of how the ConfigCat SDK determines the value of a feature flag. - [Percentage Options](https://configcat.com/docs/targeting/percentage-options.md): Using Percentage Options, you can define that a certain percentage of users should receive a specific value. This way, you can gradually release a new feature to a subset of users. - [Targeting Overview](https://configcat.com/docs/targeting/targeting-overview.md): Overview of the ConfigCat targeting feature with examples. - [Flag Condition (Prerequisite)](https://configcat.com/docs/targeting/targeting-rule/flag-condition.md): A Flag Condition is a condition that is based on the comparison of another feature flag's value and a preset value (comparison value). - [Segment Condition](https://configcat.com/docs/targeting/targeting-rule/segment-condition.md): Segments allow you to define user groups based on any user attributes. Ideal for beta testing on a certain group of users. - [Targeting Rule](https://configcat.com/docs/targeting/targeting-rule/targeting-rule-overview.md): Targeting Rules allow you to set different feature flag values for specific users or groups of users in your application. - [User Condition](https://configcat.com/docs/targeting/targeting-rule/user-condition.md): A User Condition is a condition that is based on the comparison of a user attribute and a preset value (comparison value). It allows you to define Targeting Rules which target users based on their properties. - [User Object](https://configcat.com/docs/targeting/user-object.md): The User Object is a collection of user attributes that store various pieces of information about a user. The User Object is essential for targeting. ## What is a JSON download? - [What is a config JSON download?](https://configcat.com/docs/requests.md): Learn how the usage & quota works, how the number of config JSON downloads is counted and how to lower your monthly usage. ## Network Traffic - [Network Traffic](https://configcat.com/docs/network-traffic.md): Network Traffic refers to the data transmitted between your applications and ConfigCat servers. ## Service Status & Monitoring - [Service Status & Monitoring](https://configcat.com/docs/service/status.md): To check the current health and status of the service visit//status.configcat.com. ## Plans, Purchase & Billing - [Plans, Purchase & Billing](https://configcat.com/docs/purchase.md): This page explains how to purchase ConfigCat plans, how to manage your billing information and how to pay your bill. ## Subscription Plan Limits - [Subscription Plan Limits](https://configcat.com/docs/subscription-plan-limits.md): This page lists the limits of the different ConfigCat subscription plans. ## Organization & Roles - [Organization & Roles](https://configcat.com/docs/organization.md): You can invite an unlimited number of people to your organization in ConfigCat. Learn how to manage your organization and its roles. ## News & Product Updates - [News & Product Updates](https://configcat.com/docs/news.md): Instead of spamming your mailbox, we're posting news and product updates here. ## FAQ - [FAQ - Frequently Asked Questions](https://configcat.com/docs/faq.md): This is a collection of frequently asked questions and the most typical answers from the ConfigCat Support Team. ## Glossary - [ […truncated]