What is combining data from multiple data sources called?

Data blending is the process of combining data from multiple sources into a functioning dataset. This process is gaining attention among analysts and analytic companies because it is a quick and straightforward method used to extract value from multiple data sources.

I think you should start by determining what data you want to integrate. This can be a more complicated question, check the info here https://www.oxagile.com/article/integra ... th-expert/ than it seems, depending on your goals and use cases. For example, you may want to integrate data from a system (CRM) to be able to get information about customers who buy products in your e-commerce business.