FULLFACT Inc. has released a free practical guide (white paper) titled "5 Steps to Solve SaaS Silos." This guide organizes how to eliminate the transcription, reconciliation, and duplicate data entry that increases after introducing individual SaaS tools like freee, SmartHR, and kintone for specific functions. Background: The More Tools You Add, the More Manual Work Increases Introducing SaaS has become standard practice, with individual tools being adopted for specific functions. It is not uncommon to operate accounting, HR, and customer/project management using separate SaaS platforms. However, tasks that span across these functional boundaries (e.g., from order receipt to invoicing and payment, or from onboarding to payroll and expense reimbursement) are often connected by exporting CSV data from each SaaS and transcribing it into spreadsheets. This frequently leads to a situation where "input effort has increased compared to before introducing SaaS." This proliferation of manual work is not an abstract issue of "DX not progressing," but can be broken down into concrete symptoms such as master data duplication, repetitive transcription, and inconsistent figures. The cause is less a mistake in SaaS selection and more a lack of internal consensus on "which SaaS is the source of truth for the same business partner, employee, or project" when integrating them. By designing the connection methods before adding tools, it may be possible to unravel this chain of symptoms. What You Will Learn in This Guide: The 3 symptoms of "increased manual work" (master data duplication, repetitive transcription, inconsistent figures) and their background factors that occur in organizations using multiple SaaS. The implications of changes in prerequisites such as API availability, iPaaS standardization, and built-in AI agents for integration. Methods for reaching internal consensus on deciding the "source of truth SaaS" for master data integration (business partners, employees, projec