1. Big picture, fine math. For example, we are doing promotion and offline planning, experienced promoters know a lot of ways of external links, but where to increase, how much to increase, increase to achieve what effect need to be planned by website operators. You can't release external links without restriction in order to keep them, and you need to think about them in terms of website weight, traffic, relevance, brand effect, conversion rate, and so on.
2. Abundant resources. We all know, do activity planning is very consuming manpower, material and financial resources, the capital budget is to do activities before the top priority to consider, how much the budget will be directly the effect of this activity. And if you have a relatively rich resources and will integrate it, not only save time and effort but also save money.