Final answer:
Ron Swift was the guest speaker who discussed IS consulting, advising on the best IS system choices for business needs.
Step-by-step explanation:
The guest speaker who discussed IS consulting was Ron Swift. IS consulting typically involves advising clients on selecting and implementing the most appropriate information systems to support their business objectives.
An experienced individual such as Ron Swift would assess the needs of the client's business, the scalability of the system, integration capabilities with existing systems, and how the new system could help in achieving strategic goals.