Every business user needs to integrate several data sources (both internal and external) in order to improve and optimize their decisions and business performance. Data integration is an umbrella term that encapsulates two terms : - Architectural Approaches (like Data Lake, Operational Data Store (ODS), Data Warehousing (DWH), Data Federation etc.) - Data Integration Tools (like ETL Tools, Data Federation Tools, Replication Tools etc.) for achieving the consistent access and delivery of data to meet the data consumption requirements of all applications and business processes.