The below list of questions will help you to get some high level overview of how to integrate
your application with other third party services and also will help you what are all the question's
we may need to ask to third party provider
Do you have any kind of web interface where we can test web methods by passing sample data?
How many ways we can integrate your product in to our application? ( Web-methods, REST API's, JavaScript api's, ODATA etc )
Does all API's support all functionality’s?
Limitations of your product?
Do you have any web interface,...