When aiming to achieve certain goals and requirements, you may need to use different data integration patterns. Extract, transform, and load (ETL) is suitable for batch processing, historical analysis, and data consolidation as it involves extracting data from various sources, transforming it into a common format and structure, and loading it into a target data store. Alternatively, extract, load, and transform (ELT) is suitable for real-time or near-real-time processing, streaming analysis, and data exploration as it involves extracting data from various sources, loading it into a target data store, and transforming it there using the target's processing capabilities. Finally, data virtualization is suitable for data federation, data abstraction, and data access as it creates a virtual layer that abstracts the underlying data sources and provides a unified view of the data to the data consumers. You should consider the pros and cons of each pattern to select the one that best suits your needs and constraints.