Hi Syed, the best way to know exactly what is available in Integration Cloud is to view the documentation, which is available in Empower. I’ve attached the help files here.
A high level summary of the capabilities include:
Ability to connect to SaaS applications and call operations available in the SaaS APIs
Ability to build integrations, either point to point, or using orchestration
Ability to connect to on premises applications either using webMethods or with a light weight Integration Agent
Although I cannot give you public facing customer references, we have customers that are using Integration Cloud mostly to integrate between cloud applications such as Salesforce, Marketo, ServiceNow and others. And in some cases we have customers who are integrating with on premises applications such as SAP and MS Dynamics CRM.
Also, did you sign up for a free trial and try it out for yourself?