Answer:
combination of price, product, place and promotion.
In addition, integrated marketing utilizing PR, advertising, social media, social media communications, website and e-marketing have great impact than implementing any of these disciplines alone. This ensures consistency and increases speed with which you can reach target audiences. Read more here http://www.newsmakergroup.com/blog/a-portrait-of-a-good-pr-client-part-1-understanding-your-goals/