# Concepts

- [Apps](https://docs.squidex.io/id-02-documentation/concepts/apps.md): Apps are Used to Group Content for Projects, Teams or Applications.
- [Teams](https://docs.squidex.io/id-02-documentation/concepts/teams.md): A Team is Used to Group Apps for Sharing a Subscription and for Easier Management
- [Schemas](https://docs.squidex.io/id-02-documentation/concepts/schemas.md): Schemas Define the Structure of Your Content.
- [Field Rules](https://docs.squidex.io/id-02-documentation/concepts/schemas/field-rules.md): Learn About Field Rules in Squidex
- [Content](https://docs.squidex.io/id-02-documentation/concepts/content.md): Learn About Adding and Viewing Your Content on Squidex
- [Scheduled Publishing](https://docs.squidex.io/id-02-documentation/concepts/content/scheduled-publishing.md): Learn About Scheduling Content
- [Assets](https://docs.squidex.io/id-02-documentation/concepts/assets.md): Learn About Assets in Squidex and How to Use Them
- [Querying Assets](https://docs.squidex.io/id-02-documentation/concepts/assets/querying-assets.md): Learn How to Query Uploaded Assets
- [Localization](https://docs.squidex.io/id-02-documentation/concepts/localization.md): Localization Allows You to Define Content in Multiple Languages.
- [Migrations](https://docs.squidex.io/id-02-documentation/concepts/migrations.md): Migration is the Process that Takes Squidex From one Major Version to the Next Major Version.
- [Roles & Permissions](https://docs.squidex.io/id-02-documentation/concepts/permissions.md): Roles and Permissions Provide Users the Ability to View, Change and Delete Content, Assets and Settings.
- [Rules](https://docs.squidex.io/id-02-documentation/concepts/rules.md): Rules are Used to Automate Workflows by Reacting to Events
- [Publish an Event to Azure Queues using Rules](https://docs.squidex.io/id-02-documentation/concepts/rules/publish-an-event-to-azure-queues-using-rules.md): This Page Demonstrates How to Use Rules To Publish an Event to Azure Storage Queues
- [Populate Elasticsearch Index](https://docs.squidex.io/id-02-documentation/concepts/rules/populate-elasticsearch-index.md): This Page Shows How To Populate an Elasticsearch Index using Rules
- [Backups](https://docs.squidex.io/id-02-documentation/concepts/backups.md): Backups Store all your App Content and are Useful for a Few Scenarios
- [Subscriptions](https://docs.squidex.io/id-02-documentation/concepts/subscriptions.md): Subscriptions are Used to Manage the Billing and Usage Information for Squidex Cloud.
- [App Subscriptions v/s Team Subscriptions](https://docs.squidex.io/id-02-documentation/concepts/subscriptions/app-subscriptions-v-s-team-subscriptions.md): Common differences between app and team subscriptions, and frequently asked questions
- [Notifications](https://docs.squidex.io/id-02-documentation/concepts/notifications.md): Learn How to Configure and Subscribe to Notifications in Squidex
- [Dashboard](https://docs.squidex.io/id-02-documentation/concepts/dashboard.md): This Page Describes the Dashboard Page and How to Customize it
- [Workflows](https://docs.squidex.io/id-02-documentation/concepts/workflows.md): When the Content Item is Available in the Public API, Workflows Define the Various Statuses of a Content Item, from Initial Status to Published Status,


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