Generally speaking, most companies prefer to outsource their search engine marketing efforts to SEM professionals to ensure their programs are properly managed and remain cutting-edge. Larger companies tend to have an in-house resource like a Webmaster or Internet Marketing Manager who is responsible for implementing search engine marketing programs, but often times, this person outsources the day-to-day SEM activities to a trusted vendor to free up their time educate and manage internal resources, develop long-term strategies and to create optimized content. Factors influencing the decision process include objectives, timeline, available marketing budget and internal resources.