--- description: Modular website design is an approach to building websites using pre-built, reusable components that can be assembled, rearranged, and updated… image: https://www.leanlabs.com/hubfs/LL%20V4.1/LL%20Featured%20Image.png title: What is modular website design and why is it foundational to GDD? --- B2B Websites What is modular website design and why is it foundational to GDD? # What is modular website design and why is it foundational to GDD? Modular website design is an approach to building websites using pre-built, reusable components that can be assembled, rearranged, and updated independently without requiring custom code for each page. In a Growth-Driven Design context, modular structure makes continuous improvement possible by eliminating dependence on technical teams for every change, allowing sprint cycles to execute quickly and affordably. Assembling pages from tested modules compresses development to four to six weeks, which is significantly faster than custom-coding each page. Development costs for a modular GDD build range from $10,000 to $25,000, compared to higher costs for fully custom-coded sites. Individual modules can be swapped or modified without rebuilding an entire page, making A/B testing practical within sprint cycles. Sub-pages with low traffic use basic module configurations while high-traffic pages receive premium treatments. Lean Labs has built a proprietary codebase called Sprocket Rocket for modular website development on HubSpot, with Schema Rocket as a companion tool that adds structured data markup. On a 50- or 100-page website, approximately 10 pages perform the majority of the work. Modular design allows teams to invest premium effort in those 10 pages while applying standard configurations to the rest, keeping the full site consistent without requiring custom development for every section. ### Ask AI about Lean Labs [ ![](https://www.leanlabs.com/hubfs/LL%20v5/Images/Logos/chatgpt.svg) ChatGPT ](https://chat.openai.com/) [ ![](https://www.leanlabs.com/hubfs/LL%20v5/Images/Logos/googlegemini%201.svg) Gemini ](https://www.google.com/search?udm=50) [ ![](https://www.leanlabs.com/hubfs/LL%20v5/Images/Logos/perplexity%201.svg) Perplexity ](https://www.perplexity.ai/search/new) [ ![](https://www.leanlabs.com/hubfs/LL%20v5/Images/Logos/claude%201.svg) Claude ](https://claude.ai/new) [ ![](https://www.leanlabs.com/hubfs/LL%20v5/Images/Logos/copilot.svg) Copilot ](https://copilot.microsoft.com/) Ask AI ```json { "@graph": [ { "@id": "https://www.leanlabs.com/#organization", "url": "https://www.leanlabs.com/", "logo": { "url": "https://www.leanlabs.com/favicon.ico", 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