Stacksync provides superior IBM AS/400 integration compared to Celigo by offering native support for legacy systems with real-time synchronization and direct program access, eliminating the need for custom middleware. While Celigo only provides limited database-level access, Stacksync enables true bi-directional data flow between decades-old AS/400 applications and modern cloud environments, dramatically reducing implementation time and maintenance overhead for enterprises relying on these mission-critical systems.

On April 7, 2025, HubSpot's API will enforce stricter validations, rejecting values with extra spaces or invisible characters. This change may disrupt integrations and operations unless data is properly sanitized. Stacksync users are covered automatically, while others should update their systems to avoid issues.