Why You Should Migrate from BigCommerce V2 to V3 in 2026

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Introduction

If you’re running a BigCommerce store that’s been around for a few years, you might be using the older V2 Product Experience (also called Catalog V2). With BigCommerce’s continued push toward modernization and the official deprecation of V2 Catalog APIs, 2025 is the perfect time to make the switch to Catalog V3. Transitioning now allows you to take advantage of improved performance, better tools, and long-term platform support. If you’re already planning upgrades or hiring a BigCommerce developer, it’s a great opportunity to align that investment with a smooth migration to V3.

Here’s why this migration should be on your priority list.

Understanding the Difference: V2 vs BigCommerce V3 Catalog

How to Tell Which Version You’re Using

The easiest way to identify your current version is by looking at your product management interface:

V2 Product Experience: Features a tab-based layout with sections like Details, Images & Video, Inventory, Options & SKUs, and Custom Fields

V3 Product Experience: Displays all product information on a single screen with a left navigation sidebar linking to different sections

Most newer BigCommerce stores are already on V3, but if you’ve been on the platform for several years, you might still be using V2.

The Technical Reality: V2 APIs Are Deprecated

BigCommerce has officially deprecated the V2 Catalog REST APIs, meaning:

1. No new features will be added to V2 APIs

2. All development resources are focused on V3 and GraphQL

3. Performance optimizations are exclusive to V3

4. Future integrations will require V3 compatibility

5. While V2 continues to function, BigCommerce is clear that V3 is the future of their platform.

Game-Changing Performance Improvements

Lightning-Fast API Response Times

V3 delivers up to 10x faster API response times compared to V2, which translates to:

1. Faster page load speeds (crucial for SEO and conversion rates)

2. Improved mobile experience

3. Better customer satisfaction

4. Higher search engine rankings

Efficient Resource Management

V3 allows you to perform most tasks with fewer API calls:

1. Create products with variants and custom fields in a single request

2. Include sub-resources within requests

3. Simplified pagination with meta objects

4. Reduced server load and improved responsiveness

Simplified Product Management

Streamlined Variant and Modifier Handling

V2 Approach:

1. Options organized into option sets applied to products

2. Complex rule system for price and weight adjustments

3. Separate API calls for each component

V3 Approach:

1. Variant options (for inventory-tracked variations) with unique SKUs

2. Modifier options (for customizations) without inventory tracking

3. Direct price and weight assignment without complex rules

4. Both types can be assigned to individual or multiple products

Enhanced Inventory Management

V3 treats every purchasable entity as a variant, including the base product. This enables:

1. Better inventory tracking

2. Simplified SKU management

3. More accurate stock level reporting

4. Enhanced multi-location inventory support

Conclusion

Migrating from BigCommerce Catalog V2 to V3 is more than just a technical upgrade—it’s a strategic move to future-proof your ecommerce business. With improved performance, streamlined product management, and advanced developer tools, V3 delivers the flexibility and scalability modern merchants need.

While V2 may still work, BigCommerce’s roadmap is clearly centered on V3 and beyond. Migrating in 2025 ensures you’re aligned with the platform’s latest innovations and sets your store up for long-term success.

By making the switch now, you’ll gain:

1. Faster site performance

2. Easier catalog and product management

3. Enhanced integrations and developer support

4. A future-ready ecommerce foundation

Don’t wait for the last minute—plan your migration on your own terms.

Partner with Folio3 for a seamless BigCommerce V2 to V3 migration and unlock the full potential of your ecommerce store in 2025.

See Also: A Comprehensive Guide to BigCommerce V2 to V3 Store Migration 2025

About Author

Picture of Sairum Hussain

Sairum Hussain

Hey there I am a Senior Software Engineer at Folio3 having 5+ years of experience and strong expertise in SaaS-based eCommerce solutions, particularly in Bigcommerce. I am passionate about building and customizing user-friendly and high-quality online stores for customers. As part of my experience, I have customized checkout processes, integrated payment gateways, developed custom apps, and provided technical support to clients.

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