WDI is an extension and specialization of data integration that views the web as a collection of heterogeneous databases.
Data integration techniques in the context of the web, forms the foundation for businesses taking advantage of data available on the ever-increasing number of publicly-accessible websites.
[5] WDI has application in many fields, including bioinformatics,[6] search engines,[7] price comparison,[8] and forensic search[9] data analysis, business intelligence, ecommerce,[10] healthcare, pharmaceutical[11] and product development.
Similarly, healthcare systems use results of competitions conducted on websites like Kaggle[12] to see the accuracy of data and to create user-focused products.
In fact, IBM estimates that poor quality WDI is costing companies over $3 trillion[13] in revenue each year.