Exactly this ^ Nothing like ideal length. Length doesn't matter. Topic coverage and content quality/relevance does. You can write tons of fluff and even if it worked for...

Please provide me with one such example platform and your published article URL on it.

Thanks for your answer. But I have not found their guideline.

Link exchange is against Google's webmaster guidelines. You can read here more, https://www.searchenginejournal.com/are-exchanged-or-reciprocal-links-okay-with-google/

Hi @binayjha (3264), Thanks for your reply, Why link exchange might not help in SEO ? we two have a backlink each other, I chose the same category site with my site to li...

Each platform can have its own guidelines for bloggers. There is a need to follow the guidelines to take benefit of the media.

Link exchange might not help in SEO.

There is no such thing as an appropriate entry length. The entry must exhaust the topic.

You need to find the right websites that allow you to insert backlinks.

A soft 404 occurs when a webserver replies to a page that doesn't exist with a 200 OK HTTP response code rather than the proper 404 Not Found.