So you need to connect an application to an external system. Developers and IT architects know how to cover the technical side, with for example SOAP web services, REST APIs, or stored procedures. But there is more to integration than just a choice in technology. You also face a functional challenge: the relevant functionalities of multiple applications must seamlessly fit into each other.
One of the major shifts that I see happening in the digital transformation journey is the shift in thinking from applications to platforms.