Difference between Related work and Background section?
From my understanding:

Background: Explains all concepts the reader needs to understand the present paper. This typically includes references to existing work that introduced the concepts, but usually a limited number thereof (&lt;= 5, unless your paper builds on exceptionally diverse foundations).
Related work: Discusses other related work. This should not only summarize the existing work, but also discuss how your present paper differs from it and why this is a &quot;step forward&quot; (new or better).