Abstract

This systematic review explores the application and evolution of Human-Centered Design (HCD) approaches in product innovation across the telecommunications and public sectors. As both domains face rapid technological change and evolving user expectations, incorporating user centric methodologies has become pivotal to ensuring relevance, usability, and adoption of services. This review synthesizes findings from 52 peer-reviewed articles, government reports, and industry whitepapers published between 2013 and 2021. It examines how HCD principles such as empathy driven research, iterative prototyping, participatory design, and cross functional collaboration are integrated into the design and development of digital and physical products. The review reveals that in the telecommunications sector, HCD practices are predominantly applied in service personalization, mobile application design, and user interface improvements to enhance customer experience and retention. Conversely, in the public sector, HCD is increasingly used to co create citizen facing digital platforms, improve accessibility in e-governance systems, and foster trust and transparency through inclusive design. Despite sectoral differences, shared challenges include institutional resistance, limited user research capacity, and difficulty aligning HCD with existing organizational structures and performance metrics. Notably, successful cases demonstrate that embedding HCD within agile or lean frameworks, engaging end-users early and consistently, and fostering organizational buy-in are critical enablers of effective innovation. This review also identifies a growing trend of integrating HCD with emerging technologies, including artificial intelligence and IoT, to better anticipate user needs and deliver responsive solutions. However, gaps persist in evaluating long term impact, scalability, and ethical considerations in user data handling. This study contributes to the discourse on sustainable innovation by offering a conceptual model that aligns HCD with strategic innovation objectives in both sectors. It underscores the need for policy frameworks and institutional reforms that promote human centered innovation cultures. Future research should focus on longitudinal studies and comparative cross-sectoral evaluations to validate and refine HCD’s role in systemic transformation.