B2B SaaS applications often require integrations with various systems such as CRM, HRIS, and ERP, as well as custom in-house solutions. These integrations are complex due to the need for stringent security measures, scalability challenges, and varying standards across different platforms. Security concerns include ensuring proper authentication, encryption, and trusted connections between systems. Scaling integrations efficiently without proportionately scaling support teams and managing tech debt are significant hurdles. Furthermore, differing standards in APIs, authentication methods, and data formats add to the difficulty, making uniform integration processes challenging. Despite these obstacles, solutions like embedded Integration Platform as a Service (iPaaS) can help SaaS companies manage these complexities without compromising their core product development and market position, as demonstrated by companies like Sisu Software, which improved integration efficiency using Prismatic.