For most Taiwan SMEs, SaaS has noticeably lower entry barriers initially. No need for in-house servers or dedicated IT personnel; you pay based on usage duration and account numbers, keeping initial investment controllable. The trade-off is less customization flexibility, and data resides on cloud servers—your enterprise must accept this premise and understand the service provider's security practices. Self-built systems offer customization advantages but require long development time, high upfront costs, and ongoing technical maintenance resources, which is often unsustainable for understaffed SMEs. By the time the system launches, you've already consumed significant resources. Our recommendation: start with SaaS to validate workflows and accumulate data, then evaluate moving toward customization only when you have clear, specific requirements.