Digital transformation is increasingly becoming a crucial factor for business growth and management across companies of all sizes and industries, offering significant benefits. Despite this, statistics reveal a high failure rate for many digital transformation initiatives. To address this issue, this study conducted a thorough literature review and developed a Porter’s Digital Maturity Model grounded in Porter’s Digital Value Chain and guided by Sociotechnical Systems theory. The model, which consists of seven dimensions and six levels of digital maturity was validated through interviews with five experts from various industry sectors. According to experts, the new model is both detailed and adaptable, making it suitable for different companies, industries, and stages of development across departments, aligning with strategic business objectives. This model empowers companies to precisely assess their level of digital maturity, navigate the process of digital transformation and meet contemporary demands. Additionally, it contributes valuable insights to the body of literature on digital transformation and maturity models.