Analyze the marketing tools, your team budget and channels that you are already using, including website, blog content, social media account, word-of-mouth, native advertising, Google AdWords, paid advertising, and so on. Ask yourself: how effective were they and how can they be used next year? Which online advertising strategies can be refined or dropped?
It is okay if your future digital marketing strategy process does not incorporate all these elements, but it sure should use those that were the most effective in the previous year. For example, if a landing page you recently created has been effective in generating leads, use it again but improve it as much as possible. The same applies to other tools and channels.