One of my favorite: You have written some code you'd like people to be able to reuse. Should you share it as a library or expose it as a service? Talk me throu

One of my favorite: You have written some code you'd like people to be able to reuse. Should you share it as a library or expose it as a service? Talk me through how you'd make this decision for a few cases and what the pros and cons are for each choice.