Follow the instructions in
Installation for PowerCenter and Data Quality
to install Informatica services and the PowerCenter and Informatica Data Quality products. You can install Informatica services and clients on one or more machines. The guide includes pre- and post-requisite tasks and steps to install the Informatica services and clients for the Informatica domain. Prerequisite tasks include planning the environment, setting up databases, and verifying system requirements. Post-requisite tasks include additional application services and configuring environment variables.