---
title: Customizing and developing your store
related:
  - https://docs.kentico.com/k10/developing-websites/developing-sites-using-asp-net-mvc/developing-on-line-stores-in-mvc.md
  - https://docs.kentico.com/k10/custom-development.md
  - https://docs.kentico.com/k10/integrating-3rd-party-systems.md
  - https://docs.kentico.com/k10/integrating-3rd-party-systems/using-the-integration-bus.md
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

Kentico allows you to extend the scope of available features. You can achieve this by integrating applications, utilities, website templates, etc. developed outside Kentico by third parties. You can also enhance the system by adding your custom [applications](https://docs.kentico.com/k10/custom-development/creating-custom-modules.md), [web parts](https://docs.kentico.com/k10/custom-development/developing-web-parts.md) and other items.

- [Developing your on-line store with ASP.NET MVC](https://docs.kentico.com/k10/developing-websites/developing-sites-using-asp-net-mvc/developing-on-line-stores-in-mvc.md)
- Integrating functionality with Kentico Marketplace
- [Integrating your custom functionality](#integrating-your-custom-functionality)

## Integrating functionality from the Kentico Marketplace

The Kentico Marketplace, the official Kentico community feature sharing portal, offers a wide range of third-party features recommended for use with Kentico.

Typical examples of E-commerce add-ons are payment gateways, shipping providers, connectors for tax calculation services, etc. See the [E-commerce section of the Kentico Marketplace](http://devnet.kentico.com/Marketplace/E-commerce.aspx).

> **Info:** **Note**: Not all marketplace add-ons are available for all versions of Kentico. Before you install an add-on to your production site, check the add-on description and make sure it works with your version.

## Integrating your custom functionality

- You can integrate features that you developed according to your specific requirements.
  - For example, you can add your custom applications, templates, web parts, etc. You can also create your custom payment gateways, as described in detail in [Creating a custom payment gateway](https://docs.kentico.com/k10/e-commerce-features/customizing-and-developing-your-store/payment-related-customizing/creating-a-custom-payment-gateway.md), or your custom shipping provider, as described in detail in [Implementing custom shipping carrier providers](https://docs.kentico.com/k10/e-commerce-features/customizing-and-developing-your-store/shipping-related-customizing/implementing-custom-shipping-carrier-providers.md).
- You can integrate other third party functionality.
  - The system allows you to add third party features using, for example, the built-in [integration bus](https://docs.kentico.com/k10/integrating-3rd-party-systems/using-the-integration-bus.md) or [REST service](https://docs.kentico.com/k10/integrating-3rd-party-systems/kentico-rest-service.md).

If you need to customize the behavior of the system or wish to personalize its built-in applications, see [E-commerce customization model](https://docs.kentico.com/k10/e-commerce-features/customizing-and-developing-your-store/e-commerce-customization-model.md).