> For the complete documentation index, see [llms.txt](https://www.sdv.guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.sdv.guide/pulse/lean-sourcing.md).

# Lean Sourcing

In the **multi-speed delivery model** of **./pulse**, where hardware and software evolve at different paces, **traditional sourcing and requirements processes become bottlenecks**.

**Lean Sourcing** enables **modular, agile procurement** by **decoupling HW and SW**, supporting **just-in-time sourcing**, and aligning supplier contracts with **continuous integration cycles**. This approach **reduces dependencies, accelerates updates, and ensures supply chain resilience**, making it essential for **Software-Defined Vehicles (SDVs)**.

* **Lean Requirement Management (LeanRM)** simplifies requirements management by **focusing on value, reducing waste, and ensuring traceability** at the speed of modern development. It replaces **rigid, document-heavy processes** with **adaptive, iterative requirement flows** that match the pace of SDV innovation.
* **Supply Chain Management for SDVs** shifts from **static, hardware-driven logistics** to a **modular, software-first ecosystem**. It **unbundles HW and SW** and enables **agile contracts with fewer fixed requirements**, allowing for **faster integration, reduced risk, and better alignment with over-the-air (OTA) updates**.

Together, these approaches create an **adaptive framework** that enables SDVs to evolve **continuously, efficiently, and at scale**.