Picking the right unified API is crucial for SaaS products as it enables fast integration, reduces maintenance burden, and helps in building all necessary product integrations. To achieve these goals, one must evaluate three key criteria: the number of APIs and categories supported by the unified API, its depth of coverage, and extensibility. A unified API should cover specific use-cases, enable customization, and allow for independence to make changes without waiting on the provider. The right unified API can accelerate an integrations roadmap and help in delivering value to customers, making it a critical infrastructure decision for SaaS products.