Identifying relevant keywords is crucial for successful content marketing campaigns in digital marketing. Start by brainstorming relevant topics and themes related to your business. Then, use keyword research tools like Google Keyword Planner, SEMrush, or Moz Keyword Explorer to find specific keywords with high search volume and low competition. Consider long-tail keywords that are more specific and have a higher chance of attracting targeted traffic. The Ultimate Guide to Winning with Content Marketing in Digital Marketing provides detailed guidance on keyword research and selection.