6 Software Licensing Models + Enforcement Requirements

Software licensing models, which define how customers access and consume products, pose significant engineering challenges as they require systems to evaluate entitlements, enforce limits, and track usage in real-time. These models include hybrid, credit-based, usage-based, feature-based, tiered, and per-seat licensing, each with specific technical requirements that impact the metering, entitlement, and enforcement layers of a system. Hybrid models, common in AI products, combine subscription access with usage or credit consumption, necessitating aligned entitlements and metering. Credit-based models involve prepaid balances with real-time consumption tracking, while usage-based models require metering of unit consumption like API calls or compute time. Feature-based licensing offers access to specific features based on subscription plans, demanding a centralized feature-gating system. Tiered licensing involves predefined plans with bundled features and limits, and per-seat models tie access to user identities, challenging systems to manage identity mapping and seat assignments. Engineering problems arise when licensing is treated as a mere pricing decision rather than an infrastructure issue, often leading to inconsistent enforcement, delayed usage data, and complex maintenance requirements. Stigg, a runtime enforcement layer, provides solutions with real-time entitlement checks and usage control, crucial for AI-powered systems where each request directly impacts costs, transforming licensing into a continuous cost control system.

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