We ran into this dilemma last year at Lucidchart when we were debating how to handle SEO, PR, and general marketing. We flirted with outsourcing but eventually

We ran into this dilemma last year at Lucidchart when we were debating how to handle SEO, PR, and general marketing. We flirted with outsourcing but eventually hired two full-timers and we haven't looked back. Took a month or two to get them up to speed on the product and best practices but I now glean off of their expertise and having them in-house makes our team stronger. The only thing we would outsource is very quantifiable deliverables that need no additional maintenance to be valuable. Ie. data entry, template designs, link building.