Organizations today depend increasingly on the effective adoption of Information and Communication Technology (ICT) to ensure sustainable growth in a competitive global landscape. However, research on the internal factors influencing successful ICT adoption, especially through case studies, remains limited. This study seeks to address this gap by exploring the internal factors such as organizational culture, leadership styles, employee attitudes, resource availability, user perceptions, and peer influence that drive ICT adoption and align with organizational strategies. Drawing on a literature review and qualitative case study analysis of peer-reviewed articles, books, and reports published from 2003 to 2024, the study examines how these factors impact ICT integration and contribute to long-term success. Case studies from leading organizations illustrate how ICT strategies are implemented effectively in diverse contexts. The study is guided by theoretical frameworks, including Innovation Diffusion Theory (IDT) and the Technology Acceptance Model (TAM), extending their application to internal organizational dynamics. The findings extend existing theoretical frameworks such as Innovation Diffusion Theory (IDT) and Technology Acceptance Model (TAM) by applying them to internal organizational contexts, illustrating the role of leadership, culture, and resources in ICT adoption. Practically, this study provides recommendations for developing an ICT-driven culture, aligning technology initiatives with strategic goals, and investing in infrastructure to overcome adoption barriers and create sustainable technological progress in a globalized society.