Global Tech Co. is a leading player in the technology sector specializing in advanced software solutions for enterprises. In recent years, the company has reported robust growth driven by increased demand for cloud services and artificial intelligence applications. As the industry transitions towards a more digitally integrated economy, analysts are evaluating Global Tech's long-term growth potential. The company has a strong competitive advantage due to its established brand and proprietary technology. However, rising competition from emerging entrants and regulatory changes in data privacy present potential challenges.

Given this context, which of the following metrics would be most useful in assessing Global Tech's future growth prospects?