Does ODI support web services?

Yes, ODI is ‘SOA’ enabled and its web services can be used in 3 ways:

The Oracle Data Integrator Public Web Service, that lets you execute a scenario (a published package) from a web service call

Data Services, which provide a web service over an ODI data store (i.e. a table, view or other data source registered in ODI)

The ODIInvokeWebService tool that you can add to a package to request a response from a web service