In Chapter $5,$ competitive dynamics refers to the:

set of competitive actions and competitive responses the firm takes to build or defend its competitive advantages and to improve its market position.

circumstances in which competitors are aware of the degree of their mutual interdependence resulting from market commonality and resource similarity.

ongoing set of competitive actions and competitive responses between competitors as they maneuver for advantageous market position.

ongoing actions and responses among all firms competing within a market for advantageous positions.