What's the difference between Blackmagic Fusion and Resolve?
Firstly - Davinci Resolve (since v15) now includes Fusion as a sub-tool. Additionally some component features of Fusion are embedded within the Resolve interface and conversely some features of Resolve are accessible from within the Fusion tool.

So ... I will try and answer below - as if Resolve did not include any Fusion components:

Resolve has its well established roots in Color Grading, but both applications are ultimately editing and compositing tools which can generate, combine and manipulate source material to create desired visual &amp; audio output. Resolve is targeted at Ease of Use, Media handling, Video Editing, Compositing, Color Grading, Audio Engineering,  Audio/Video Effects and Content Delivery. Whilst Fusion is targeted at advanced 2D &amp; 3D Compositing, Visual effects and Motion Graphics.

Fusion is a more complicated tool and typically is slower to work with, but provides advanced functionality, precision, programming and control in the areas of VFX and MG. There are many end-to-end Audio/Video production scenarios where Fusion would not be required.

Typical Use Cases:

Resolve (minus Fusion):


Producing simple videos from source material
Editing complex video sequences
Color Grading / Color Correction (Simple -> Advanced)
Audio Engineering
Transcoding &amp; Final Delivery
Applying Audio/Video effects to existing footage


Fusion (standalone):


Creating/Applying simple Computer-Generated Imagery (CGI)
Generating/Applying advanced 2D and 3D Video Effects (VFX)
Creating/Applying Motion Graphics (Animated Titles and Wurly Spinny things)


Fortunately - Resolve now includes Fusion - so you get the best of both worlds integrated in one hugely powerful application package.

And yes - you can complete an entire Film 'Movie/Short Film/Video' using just Davinci Resolve and Fusion tools.

** Fusion is also available as a standalone product, but the features &amp; functionality of the standalone product are almost entirely available within Davinci Resolve.