# Clerk.io Knowledge Center

> Clerk.io is an ecommerce personalization platform. The Knowledge Center explains how to set up and use recommendations, search, email, audience, data sync, designs, integrations, and developer APIs.

Use these pages to answer questions about Clerk.io. Prefer the most specific page available for the user's task. The linked `.md` URLs contain the Markdown versions of the Knowledge Center articles.

## Search

- [Search introduction](https://help.clerk.io/platform/search/intro.md): Configure webshop search.
- [Search best practices](https://help.clerk.io/platform/search/best-practices.md): Improve search conversion and discoverability.
- [Omnisearch](https://help.clerk.io/platform/search/omnisearch.md): Configure the full-page search experience.
- [Facets](https://help.clerk.io/platform/search/facets.md): Let visitors filter and narrow search results.
- [Search rules](https://help.clerk.io/platform/search/rules.md): Tailor results for specific queries.
- [Search redirects](https://help.clerk.io/platform/search/redirects.md): Send specific queries directly to chosen pages.

## Recommendations

- [Recommendations introduction](https://help.clerk.io/platform/recommendations/intro.md): Show relevant products.
- [Recommendations best practices](https://help.clerk.io/platform/recommendations/best-practices.md): Improve conversion rate, basket size, and order value.
- [Product logics](https://help.clerk.io/platform/recommendations/logics.md): Choose the logic and API endpoint for each use case.
- [Category pages](https://help.clerk.io/platform/recommendations/category-page.md): Display relevant products on category pages.
- [Content pages](https://help.clerk.io/platform/recommendations/content-recs.md): Add product recommendations to blogs and articles.
- [Recommendations analytics](https://help.clerk.io/platform/recommendations/analytics.md): Understand how visitors use Recommendations.

## Email

- [Email introduction](https://help.clerk.io/platform/email/intro.md): Understand Clerk.io's email products.
- [Email best practices](https://help.clerk.io/platform/email/best-practices.md): Plan newsletters, flows, and email recommendations.
- [Email flows](https://help.clerk.io/platform/email/flows.md): Create automated email sequences.
- [Subscribers](https://help.clerk.io/platform/email/subscribers.md): Manage recipients and subscription lists.
- [Email analytics](https://help.clerk.io/platform/email/analytics.md): Measure the performance of email marketing.

## Chat

- [Chat introduction](https://help.clerk.io/platform/chat/intro.md): Understand and configure Clerk.io Chat.

## Audience

- [Audience introduction](https://help.clerk.io/platform/audience/intro.md): Understand and segment customers.
- [Audience best practices](https://help.clerk.io/platform/audience/best-practices.md): Build useful customer segments.
- [Audience analytics](https://help.clerk.io/platform/audience/analytics.md): Analyse segment size, behaviour, and performance.

## Ask Clerk.io

- [Ask Clerk.io introduction](https://help.clerk.io/platform/ask-clerk/intro.md): Use the AI assistant in the Clerk.io admin.

## Setup and data

- [Integrations overview](https://help.clerk.io/integrations/overview.md): Choose an integration.
- [Data Sync](https://help.clerk.io/platform/data/sync.md): Import and maintain webshop data.
- [Data foundation](https://help.clerk.io/platform/data/objects.md): Understand the product, customer, order, and page data used by Clerk.io.
- [Data Health](https://help.clerk.io/platform/data/health.md): Monitor data quality and resolve issues that affect results.
- [Modifiers](https://help.clerk.io/platform/data/modifiers.md): Change product data after sync without changing the source feed.
- [JSON data feeds](https://help.clerk.io/integrations/any-webshop/data-feeds.md): Send data to Clerk.io from any ecommerce platform.
- [Tracking](https://help.clerk.io/integrations/any-webshop/tracking.md): Set up and debug real-time sales tracking.
- [Clerk.js](https://help.clerk.io/integrations/any-webshop/clerkjs.md): Add Clerk.io elements using frontend JavaScript.
- [API](https://help.clerk.io/integrations/any-webshop/api.md): Integrate with Clerk.io server-side.
- [Custom platform setup](https://help.clerk.io/integrations/any-webshop/get-started.md): Install Clerk.io when no prebuilt integration exists.
- [Platform migration](https://help.clerk.io/integrations/any-webshop/migration.md): Move to a new ecommerce platform without losing data or order history.

## Customisation

- [Elements](https://help.clerk.io/platform/elements/settings.md): Configure Clerk.io content.
- [Designs](https://help.clerk.io/platform/designs/overview.md): Create and customise designs.
- [Filters](https://help.clerk.io/platform/elements/filters.md): Control which products an Element can show.
- [Merchandising](https://help.clerk.io/platform/merchandising/intro.md): Control which products are shown.

## Further reading

- [Glossary](https://help.clerk.io/platform/glossary.md): Definitions of Clerk.io terms.
- [Data FAQ](https://help.clerk.io/platform/data/faq.md): Common questions about data and data objects.
- [GDPR](https://help.clerk.io/platform/company/gdpr.md): Manage customer data and privacy requests.
- [Search Page](https://help.clerk.io/platform/search/search-page.md): Build a full search results page.