A common schema for log attributes can unify data from different sources and technologies by standardizing attribute names, making it easier to analyze and search for data. This is particularly useful in complex environments where multiple components emit logs with varying naming conventions. By using a centralized platform like Datadog, teams can implement an automatic, standardized naming convention without modifying their code or logging strategies, enabling better visibility into their environment and facilitating the analysis of similar information from different technologies and types of technologies.