Digital transformation, a process that integrates technology to enhance products, services, and operational efficiency, places a strong emphasis on improving customer experiences, fostering innovation, and increasing overall effectiveness. Central to this transformation are cloud technologies, which play a critical role in maintaining agility and customer-centricity. When it comes to the realm of software reliability, the future holds the promise of effortless data analysis for practitioners, the availability of reliable metrics for quality assurance managers, and the introduction of user-friendly digital tools for modeling software reliability. As the software reliability market continues to expand, it opens doors to innovative opportunities. In this context, the following chapter introduces STAR, a revolutionary cloud-based tool designed to transform software reliability modeling. STAR not only ensures prediction stability and accuracy but also outperforms traditional single-curve fitting models. Its cloud-based nature allows for global accessibility, enabling users from around the world to access it at their convenience. STAR stands as a pioneering digital engineering tool for software reliability engineering and is readily available for public use.