Facebook reach is the number of unique people who saw your content. Total Reach on Facebook. Post reach and page reach, for example, are different and have different weight. Post reach is the number of people who saw a specific post in their news feed.
What happens after 10k followers on Instagram?
Once you have 10k followers, Instagram will make it easier for you to get people to your website via Stories with the swipe up to link feature. Swipe up is the only way to get a direct link from your Instagram to your other web properties. And, it’s available in STORIES, if you have 10k followers.