# Guides and tutorials overview

Practical guides for implementing specific features, integrating external systems, and building extensions.

**Implementation guide**

Use the Implementation guide when you need an end-to-end path for a B2C Retail or B2B Manufacturing implementation. It moves from architecture and project planning to setup, sample data replacement, demo validation, and go-live preparation.

- [Start the Implementation guide](/tutorials/implementation-guide/overview.md): plan and deliver an implementation with the commerce HTTP API, Frontend, Checkout, and Connect.

**Product modeling**

Define your product catalog structure, including bundles, reviews, and assortments.

- [Model static product bundles](/tutorials/product-bundles.md) — Manage static product bundles using Product Types and Product Variants.
- [Model Reviews on Products and Channels](/tutorials/review-ratings.md) — Model product and channel reviews using ratings and star systems.
- [Model assortments with Product Selections](/tutorials/product-selections.md) — Use Product Selections to model region-specific product assortments for Stores.

**Carts and checkout**

Handle carts, orders, shipping, inventory, and checkout flows.

- [Implement guest checkout](/tutorials/anonymous-session.md) — Implement guest checkout using anonymous sessions for Carts and Orders.
- [Reserve stock on Cart](/tutorials/reserve-stock-on-cart.md) — Prevent overselling by automatically reserving inventory when items are added to a Cart.
- [Reserve stock on demand and freeze prices](/tutorials/reserve-stock-on-demand.md) — Reserve inventory on demand while freezing all prices during checkout.
- [Multiple Shipping Addresses and Methods](/tutorials/multiple-shipping-addresses-methods.md) — Ship Cart items to multiple addresses or with multiple Shipping Methods.
- [Create a Recurring Order](/tutorials/create-a-recurring-order.md) — Set up and create Recurring Orders with configurable intervals.
- [Order creation edge cases](/tutorials/standard-checkout-flow.md) — Handle Order creation edge cases when implementing a checkout flow.

**Integrations**

Connect external systems such as search engines, tax providers, email services, and ERPs.

- [Integrate product data](/tutorials/product-data-integrations.md) — Integrate product data into your Project from external sources.
- [Integrate ERP](/tutorials/erp-integration.md) — Integrate an ERP system for data synchronization.
- [Integrate external search](/tutorials/search-integration.md) — Integrate an external search engine with the API and Frontend.
- [Populate a Store-specific external search](/tutorials/store-specific-external-search.md) — Build and maintain Store-specific external search indices using Subscriptions.
- [Integrate tax](/tutorials/tax-integration.md) — Integrate a third-party tax calculation service into your Project.
- [Integrate email](/tutorials/connect-email-integration.md) — Integrate automated customer emails into your Project using Connect.
- [Integrate CPQ](/tutorials/cpq-integration.md) — Integrate CPQ to synchronize products and quotes.

**Client apps and extensibility**

Build client applications and extend platform behavior with API Extensions, Subscriptions, Custom Fields, and Merchant Center customizations.

- [Implement mobile and browser apps](/tutorials/mobile-spa.md) — Securely communicate with the API from mobile or browser apps.
- [Implement an API Extension](/tutorials/extensions.md) — Validate and modify API responses using API Extensions.
- [Subscribe to Messages](/tutorials/subscriptions.md) — Create Subscriptions to send notifications when events occur in your Project.
- [Subscribe to Messages on AWS EventBridge](/tutorials/subscriptions-eventbridge.md) — Route Messages to country-specific targets using AWS EventBridge content-based filtering.
- [Add Custom Fields](/tutorials/custom-types.md) — Extend resources with Custom Fields using Types.
- [Add composable Custom Types](/tutorials/composable-custom-types.md) — Let multiple microservices declare Custom Fields on the same resource.
- [Create and install a Custom Application](/tutorials/create-custom-application.md) — Create and install a Custom Application in the Merchant Center.
- [Create and install a Custom View](/tutorials/create-custom-view.md) — Create and install a Custom View in the Merchant Center.

**Migrations and compliance**

Guidance for migrating features and workflows to commercetools, and meeting regulatory requirements.

- [Migrate to multiple Customer Groups](/tutorials/migration-guides/multiple-customer-groups.md) — Migrate from a single Customer Group per Customer to multiple Customer Groups.
- [Migrate checkout](/tutorials/strangler-pattern.md) — Incrementally migrate your checkout process using the strangler fig pattern.
- [European Price Indication Directive](/tutorials/european-price-indication-directive.md) — Advertise price reductions in compliance with Europe's Price Indication Directive.

## Navigation

- Implementation guide
  - [Implementation guide overview](/tutorials/implementation-guide/overview.md)
  - Solution introduction
    - [Architecture](/tutorials/implementation-guide/architecture.md)
    - [System interactions](/tutorials/implementation-guide/system-interactions.md)
  - Plan your project
    - [Project steering](/tutorials/implementation-guide/project-steering.md)
    - [Work with milestones](/tutorials/implementation-guide/work-with-milestones.md)
  - Discovery
    - [Explore sample data](/tutorials/implementation-guide/explore-sample-data.md)
    - [Plan integrations](/tutorials/implementation-guide/plan-integrations.md)
    - [Plan migration of data](/tutorials/implementation-guide/plan-migration-of-data.md)
    - [Plan the migration of your frontend](/tutorials/implementation-guide/plan-migration-of-frontend.md)
    - [Further considerations](/tutorials/implementation-guide/further-considerations.md)
    - [Go-live checklist](/tutorials/implementation-guide/go-live-checklist.md)
  - Start working
    - [Where to find logins](/tutorials/implementation-guide/logins.md)
    - [Verify setup](/tutorials/implementation-guide/verify-setup.md)
    - [Understand commercetools Frontend environments](/tutorials/implementation-guide/understand-frontend-environments.md)
    - [Deploy commercetools Frontend](/tutorials/implementation-guide/deploy-frontend.md)
    - [Integrate third-party services](/tutorials/implementation-guide/integrate-third-party-services.md)
    - [Configure payment and tax](/tutorials/implementation-guide/configure-payment-and-tax.md)
  - Move beyond sample data
    - [Project configuration](/tutorials/implementation-guide/project-configuration.md)
    - [Define product types](/tutorials/implementation-guide/define-product-types.md)
    - [Delete sample data](/tutorials/implementation-guide/delete-sample-data.md)
    - [Integrate products](/tutorials/implementation-guide/integrate-products.md)
    - [Import customers](/tutorials/implementation-guide/import-customers.md)
    - [Create promotions](/tutorials/implementation-guide/create-promotions.md)
    - [Model Business Units](/tutorials/implementation-guide/model-business-units.md)
    - [Update website content](/tutorials/implementation-guide/update-website-content.md)
    - [Add web analytics](/tutorials/implementation-guide/add-web-analytics.md)
    - [Change brand and style](/tutorials/implementation-guide/change-brand-and-style.md)
  - See it working
    - [Demo flow B2C Retail](/tutorials/implementation-guide/demo-flow-b2c-retail.md)
    - [Demo flow B2B Manufacturing](/tutorials/implementation-guide/demo-flow-b2b-manufacturing.md)
    - [Go live!](/tutorials/implementation-guide/go-live.md)
  - Closing chapter
    - [Summary and final words](/tutorials/implementation-guide/summary.md)
- Product modeling
  - [Manage static product bundles](/tutorials/product-bundles.md)
  - [Model Reviews on Products and Channels](/tutorials/review-ratings.md)
  - [Model assortments with Product Selections](/tutorials/product-selections.md)
  - [Model and sell products with Modular Catalog](/tutorials/variant-modeling.md)
- Pricing and discounts
  - [Set up company-specific products, pricing, and discounts](/tutorials/company-specific-products-pricing-discounts.md)
- Carts and checkout
  - [Implement guest checkout](/tutorials/anonymous-session.md)
  - [Reserve stock on Cart](/tutorials/reserve-stock-on-cart.md)
  - [Reserve stock on demand and freeze prices](/tutorials/reserve-stock-on-demand.md)
  - [Multiple Shipping Addresses and Methods](/tutorials/multiple-shipping-addresses-methods.md)
  - [Create a Recurring Order](/tutorials/create-a-recurring-order.md)
  - [Order creation edge cases](/tutorials/standard-checkout-flow.md)
- Integrations
  - [Integrate product data](/tutorials/product-data-integrations.md)
  - [Integrate ERP](/tutorials/erp-integration.md)
  - [Integrate external search](/tutorials/search-integration.md)
  - [Populate a Store-specific external search](/tutorials/store-specific-external-search.md)
  - [Integrate tax](/tutorials/tax-integration.md)
  - [Integrate email](/tutorials/connect-email-integration.md)
  - [Integrate CPQ](/tutorials/cpq-integration.md)
  - [Integrate APM provider](/tutorials/apm-integration.md)
- Client apps and extensibility
  - [Implement mobile and browser apps](/tutorials/mobile-spa.md)
  - [Implement an API Extension](/tutorials/extensions.md)
  - [Subscribe to Messages](/tutorials/subscriptions.md)
  - [Subscribe to Messages on AWS EventBridge](/tutorials/subscriptions-eventbridge.md)
  - [Add Custom Fields](/tutorials/custom-types.md)
  - [Add composable Custom Types](/tutorials/composable-custom-types.md)
  - [Create and install a Custom Application](/tutorials/create-custom-application.md)
  - [Create and install a Custom View](/tutorials/create-custom-view.md)
- Compliance and regulations
  - [European Price Indication Directive](/tutorials/european-price-indication-directive.md)
- Migrations
  - [Migrate to multiple Customer Groups](/tutorials/migration-guides/multiple-customer-groups.md)
  - [Migrate checkout](/tutorials/strangler-pattern.md)

## Related pages

- [Search documentation and API specs](/search.md)