Many marketers will target certain channels, looking at ways of essentially churning out content to get lots of words onto lots of different channels. This might produce results for some people in some industries, but equally, it might not do anything for you. You must never lose sight of your audience and actually, you should really have them at the core of your marketing strategy so that everything you do is for a certain audience.
Rather than thinking about channels, start to think about people. Maybe carry out some audience profiling so that you know who you are targeting, thinking about the kinds of people you want to be your customers and what they would want to know. You can then shape your content and strategy around this, to give you a unique offering that is right for your buyers. This saves time and money and will ultimately produce more results for you.