If we talk about what the difference is between SERM and ORM, we can say that the first term covers only the issuance of search engines, and the second covers all the features on the Internet (social networks, blog posts, comments on sites, forums, reviews and much more), which can affect the reputation.
We are often asked: Can you maintain our social networks? Of course! But this work is at an additional cost. But just imagine how long it will take you to compose and send the information. The most correct option is automation. It will be much easier and faster to insert text and select a picture and click "Save". And your post will be seen by all subscribers in all social networks.