The key differences in the buttons, controls, and viewfinder of the EOS R7 and an EOS DSLR camera like the EOS 7D Mark II.
Canon EOS R7 Mirrorless Camera in Black
Canon EOS R7 Tutorial & Camera Settings
Canon's EOS R System innovation meets the APS-C format with two new hybrid cameras, the EOS R7 and EOS R10
Canon EOS R7 Review
Canon EOS R7 Tutorial & Camera Settings
Canon EOS R7 review: Digital Photography Review
Canon EOS R7 Review
Hands-on with Canon's EOS R7 APS-C mirrorless camera: Digital Photography Review
Canon EOS R7 Camera - Canon Cyprus
Canon R7 Camera Review, Sans Mirror