Sync individual files to the cloud?

Question

Data storage

I tried to find the desired service and did not find it. Well, that is, manually uploading is as much as you like, but to do it automatically ...
What is required: I have several files on my computer that I would like to keep in the cloud for accessibility from home. The files are different in their subject matter, are in different folders (which also have other content that is not needed for synchronization) and I don’t want to throw them into one folder (as far as I understand, this is exactly what Dropbox, Google Drive, etc. require).
Additional Wishlist: because at the moment, most of these files are Excel spreadsheets, then having an online office would be a big plus (for example, Google has one, so it would be ideal to make it synchronize only individual files.)
I admit that I could not fully understand one of the well-known programs.
System: Win7.
Thank you.

Answer 1

> as far as I understand, this is exactly what Dropbox, Google Drive, etc. require.
Read about symlinks and throw symlinks into these folders;)
In Windows - MKLINK, in operating systems - ln -s