Poster design is one of the most effective communication tools that transforms information into a meaningful structure on an organized surface. At the heart of this structure lies hierarchy, which guides the viewer in the order in which it should be read. In modern design practices, the profound influence of digital culture has weakened the hierarchical structure that forms this order. This section examines this structural disintegration through the concept of hierarchy erosion, examining how the hierarchical order has shifted in modern poster design, the design reasons for its disintegration, and the visual choices digital aesthetics have used to create this disintegration. The section also assesses the impact of this erosion on the communication process and offers practical design recommendations to mitigate this disintegration.

The theoretical framework explains in detail the position of hierarchy within graphic design. Typographic scale relationships, weight distribution, the guiding function of grid structures, the formation of focal areas, and layout decisions that determine readability are among the fundamental components of hierarchical structure. The integration of digital aesthetic trends with design is reshaping this structure. Experimental typographic trends, surface-intensive compositional approaches, design habits that support rapid visual consumption, and the influence of screen culture are considered among the significant factors contributing to this transformation.

During the analysis phase, selected contemporary poster examples were examined, and the reasons for hierarchical disintegration were concretely identified. Decreasing typographic scale differences reduces the power of focal orientation, loosening the use of grids reduces clarity in information sequencing, and increasing surface density hinders the separation of text areas. These results demonstrate that hierarchical erosion stems from specific design decisions. The chapter concludes with recommendations for scaling strategies to strengthen hierarchical order, grid-based layout decisions, compositional practices that support the separation of text areas, and typographic control mechanisms that balance digital aesthetic effects. These evaluations provide a comprehensive perspective on strengthening the communication effect in modern poster design.