All of the listed tactics - they work best in combination 💪 Because content marketing without SEO is kind of useless and outreach works best when it's not email alone but a mix of touch points across different channels.
@elen_u I completely agree with you. To promote my blog and individual articles, I use every possible channel to get a client. I manage social media pages, write quality content (for example https://justdomyhomework.com/blo...), do SEO, send out an email message. Only active actions can get the desired buyer.
I agree with @Elen that its about the combination of these tools. I always think about how i like to find partners (intro'ed / recommendation from a trusted connection, awareness from seeing socially or reading about it in press, warm email intro etc). Also Word of mouth cannot be beaten; you network is so important for early B2B partnerships
I like starting at the bottom of the funnel. Look at user intent and you'll see that any of the above channels can perform. I love early user B2B acquisition experiments to find the blend between low cost, high-intent, and long-term retention. Early acquisition will cost you but it's a necessary evil, imo.