The paper will explore whether Scrum is suitable to be extended to non-IT small business projects in the United States. The researchers conducted a longitudinal action research with 24-month follow-up on 142 small businesses in manufacturing, retail, professional service and healthcare sectors. The results indicated that the custom Scrum had a great positive impact on the project completion rate, the satisfaction of clients, and the productivity of a team. The main modifications were the reduction of the time spent at meetings, the integration of the responsibilities of the Product Owner and Scrum Master, and documentation simplification. Study discovered that the long-term adoption was possible when the management had a commitment at the outset and where teams would continuously perfect the framework as the implementation progressed.Overall,the study can indicate that Scrum could be effective in much more than software development provided that it is adjusted to a non-IT small project environment.