Which of the following tools is a commonly used ETL tool?

MuleSoft is a widely recognized platform for building application networks and integrating applications, data, and devices. One of its primary functions is to facilitate Extract, Transform, Load (ETL) processes. ETL refers to the methodologies used in data warehousing and analytics, where data is extracted from various sources, transformed into the required format, and loaded into a destination for analysis or reporting.

MuleSoft provides tools such as Anypoint Studio and DataWeave for easily designing, developing, and executing these ETL workflows. Anypoint Studio is an integrated development environment that allows developers to work visually, making it easy to define how data is moved, transformed, and integrated among various systems.

In contrast, Django, Spring, and React serve different purposes. Django is a web framework based on Python, primarily used for building web applications. Spring is a framework for Java applications, often employed for server-side applications and microservices. React is a JavaScript library used for building user interfaces, particularly in single-page applications. While these technologies may be part of broader data processing ecosystems, they are not specifically designed for ETL tasks. This distinguishes MuleSoft as the appropriate choice for a commonly used ETL tool.