Explain Influencer marketing. 

Use these links:

https://afluencer.com/influencer-marketing-trends-in-the-future/

https://influencermarketinghub.com/influencer-marketing-trends/

https://talkinginfluence.com/2020/11/16/where-is-influencer-marketing-heading-in-2021/

https://www.hospitalitynet.org/news/4102722.html

1. Basic description of the situation,
2. Connection to relevant marketing concepts,
3. Takeaways/lessons learned