As your SaaS grows, your customers may want to connect your product with the rest of their tools, whether that’s running scheduled jobs, syncing data, triggering workflows, or building private internal tools. These integrations all require the same foundational capability: A secure, reliable way to programmatically access your API.

API keys remain the simplest and most familiar way for customers to integrate with SaaS products. From a customer’s perspective, API Keys should be easy to manage and use. But implementing API Keys correctly in a multi-tenant application takes real work: