Marketing or Sales-Marketing Hybrid Role?

Pure marketing or marketing-sales hybrid?

Which is more valuable to a business today? I think both have value especially as the complexity of the product increases and the technical detail as well. Unfortunately the marketing - sales hybrid type of role has to balance near-term commercial pursuits ( such as this quarter's numbers!) with the longer-term actions such as a marketing campaign or a series of press releases.

I've struggled with this over time because both positions add value, just in a different way. I see it in a framework where the sales and marketing work together. Unfortunately each can act as an "island" or "silo" where activities take place in a solitary bubble.