Influencers refers to specific individuals who possess a substantial online following and are viewed as trendsetters, often but not exclusively with consumer audiences.

Influencers can accelerate awareness and adoption of products or services by endorsing them on their social media and through their website presence. Though most of these individuals arrange such activities through paid sponsorship agreements, opportunities exist to engage some influencers through other means.

Working with an influencer can increase an organizations’ return on their PR investment and create a loyal customer base in short order. By spreading your message through a person who already possesses a rabid, loyal online audience, you can better ensure your message will be well received and shared. 

References

https://influencermarketinghub.com/what-is-an-influencer/

https://en.wikipedia.org/wiki/Influencer_marketing

https://www.merriam-webster.com/dictionary/influencer