A modular platform for configuring gutter guard systems is disclosed and claimed herein. Such gutter guard systems are designed and arranged to be positioned across the opening of a rain gutter to prevent debris from entering the rain gutter. The modular platform includes a number of interchangeable components. Select interchangeable components can be assembled to form a gutter guard system for use with a specific rain gutter based on the rain gutter's style, size, color, and the mechanism used to secure the rain gutter to a structure and/or roofline. In one embodiment, the components of a modular platform for configuring gutter guard systems include a number of main bodies, a number of front receivers, a number of rear receivers, a number of screens, a number of clips, and a number of brackets.