Tennessee Code Title 4. State Government § 4-56-113

(1) Criteria or guidance for when this state should acquire custom-designed products or services and when this state should acquire off-the-shelf products or services;

(2) For software or information systems proposed for use by the public, standards for appropriate levels of user-friendliness and customer convenience, including, but not limited to, device interoperability, minimizing customer wait times, and minimizing administrative burdens imposed on the user;

(3) For engaging employees and, where appropriate, citizens who will be end users of the software or information system in the design of solicitations, the testing of new software or information systems, and the continuous improvement of software or information systems;

(4) For appropriate transitions in the implementation of procured software or information systems to minimize service disruptions likely to violate state or federal law, impede citizen access to government services, or materially diminish the user experience or trust in state government;

(5) For avoidance of excessive costs and management of state costs resulting from changes in state statutes or policies;

(6) For avoidance of excessive costs and management of state costs resulting from transitioning from one (1) vendor to another;  and

(7) For avoidance of potential incumbent bias in procurements resulting from the cost or complications associated with transitioning from one (1) vendor to another vendor.