For partners that do not use EDI, you can use B2B Gateway to validate and handle exchanges of any type of file between the organization and the partners.
To exchange custom files with partners you create custom Data Integration mappings.
To simplify the handling for incoming Excel, TXT, and CSV files, you can use Informatica Intelligent Structure Discovery to automatically discover file structures and create an interface file. Intelligent Structure Discovery uses artificial intelligence to automate structure discovery for files that do not follow industry standards.