What's the best marketing stratefy in 2020?
Strategy* I think nowadays it's better to focus on digital marketing. Many companies offer such services. Why do I think it's a decent choice? Most people stay home and spend their time on the internet. Other ways to promote your business these days are less effective.
Oh, I think that nowadays most people are not thinking about advertising themselves. It is a big fault. For example, if you are a teacher, you can earn a lot using tutorship, but then you should present yourself. With https://newoldstamp.com/solutions/email-signature-for-teachers/ you can do that. Try!