Best iPaaS for SaaS Integrations in 2026: Paragon, Nango, and the Rise of Real-Time Unified APIs

Integration Platform as a Service (iPaaS) tools like Zapier and Workato have been instrumental in automating workflows and data movement between SaaS applications for years. However, modern SaaS platforms increasingly require real-time data access, scalability, and reduced compliance risk, which traditional iPaaS architectures struggle to provide due to their reliance on scheduled polling and data storage. Emerging solutions like real-time unified APIs, exemplified by Unified.to, offer a compelling alternative by executing API calls directly against source systems without caching data, reducing infrastructure complexity and enhancing data freshness and security. Platforms such as Paragon and Nango illustrate different approaches, with Paragon focusing on embedded integration workflows and Nango offering developer-defined sync engines, yet both face challenges in maintaining real-time data access and managing integration complexity. As SaaS companies aim for AI-driven features and real-time integrations, the shift towards architectures that avoid data replication and enable direct API access is gaining traction, prompting a reevaluation of iPaaS as the default integration solution.