Creating a blog post first on your website is beneficial for a couple of reasons... It gives updated content for your website (which I myself have been terribly guilty of neglecting), improves your SEO standings (the more you update the better they are), allows you to create more helpful or detailed information in your posts, provides a link that you can easily copy and paste to other social media platforms like LinkedIn, and effectively accomplishes 3 tasks in 1 move.
I know that Hootsuite is similar, but its focus is on Social Media accounts and I wanted to give my website some love.
Once you get really comfortable with your triple posting you can up the game even further by creating a Video post which is great content for your Youtube channel if you have one. Then add the video in the blog and share it out.