A business adoption barrier refers to any obstacle that prevents the adoption or effective use of a solution by a business. While a lack of technical knowledge could impede adoption, it doesn't always directly translate into a barrier specifically for business adoption as the business may provide training or seek outside help. Similarly, unpurchased services mean the adoption hasn't started, but not necessarily that there is a barrier once services are purchased. On the other hand, a lack of customer stakeholder is a critical barrier because stakeholder buy-in is essential for the successful implementation and integration of a solution within a business. Stakeholders champion the adoption process, ensure resources are allocated, and help align the solution with business goals.