SaaS companies face challenges in balancing Product-Led Growth (PLG) and sales-led monetization through a billing platform that supports both self-service and custom deals. Implementing changes to pricing and packaging requires constant engineering effort, while deal-by-deal customization slows down deal closures and adds technical debt. A unified solution is needed to handle both models without creating additional engineering work. OpenMeter's subscription management system was built with PLG and PLS in mind, providing frictionless onboarding for self-service customers and giving sales teams the flexibility to close enterprise deals efficiently. The platform enables businesses to launch self-service pricing faster, empower sales teams to customize pricing, and migrate customers to new plans seamlessly, minimizing risk and ensuring seamless customer migration.