Create SSIS Catalog in SQL Server

This article describes step by step approach to create SSISDB under Integration Services Catalog in SQL Server.
Copy SSIS Environment variables to another server

Launch SSIS Catalog Migration Wizard from your installed location and follow the below simple steps to migrate SSIS environment variables from one SQL server to another.
SSIS Environment Design Patterns

Learn three practical SSIS environment design patterns—Shared Nothing, Shared Server, and Shared Project—and when to use each with the SSISDB catalog.