1. Azure Data Factory - ADF is a data-integration service based on the Azure Cloud.
2. Data Factory is the best ETL tool on Azure Cloud.
3. Azure Data Factory is designed to deliver (ETL) extraction (E), transformation (T), and loading (L) processes within the cloud environment.
Comes to ADF History.
We have 2 versions in ADF
Azure Data Factory v1: ADF went into public preview on October 28th, 2014,
Azure Data Factory v2: Azure Data Factory V2 went into public preview on September 25th, 2017
Note:
ADF V2 become even better when the new visual tool was enabled in public preview on January/16/2018.