customers understand, compare, and contrast the solutions that are available for purchase (the pre-sales role); to troubleshoot problems with their implementations--that is, to help ensure that the solutions work successfully once a purchase is made (the post-sales role); and to maximize sales for the sales engineer's employer by providing help to customers (the aspect of the job that puts the "sales" in the title sales engineer).

Conflict-of-interest management and return-on-investment demonstration