SKUs define what you get. Tenants define who gets it in a securely isolated way. A SaaS provider benefits from SKUs for tiered pricing and multi-tenancy for efficient resource usage. SKU (Stock Keeping Unit) Features and Pricing: SKUs in a SaaS application typically dictate the set of features, functionalities, and usage limits (e.g., storage, number of users, API call volumes) available to a customer. Customer Choice: Customers choose an SKU based on their needs and budget. Higher-tier SKUs usually offer more capabilities and resources at a higher cost. Within a Tenant: A single tenant (customer) can only be subscribed to one SKU at a time, but may potentially upgrade or downgrade over time. Tenant Data Isolation: A tenant represents a logically isolated instance of the SaaS application dedicated to a specific customer or organization. A customer's data, configurations, and often customizations are kept completely separate from other tenants. Multi-Te...