Event-Driven Architecture (EDA) is a design paradigm in which decoupled systems communicate through the production and consumption of events. It is particularly useful for building scalable and responsive systems, as it allows for real-time data processing and asynchronous communication. EDA is increasingly relevant in the methods-and-patterns quadrant due to its ability to handle high volumes of data and its fit with modern distributed systems. By adopting EDA, organizations can create systems that are more agile and responsive to changes, facilitating innovation and improving user experiences. Its relevance in the "adopt" ring suggests that it is a well-established and effective approach that is recommended for widespread use across various industries.