Shell Programming and Scripting

Hello,

I have 2 csv files with 4 columns each.

file1.csv
A, AA, AAA, AAAA
B, BB, BBB, BBBB

file2.csv
C, CC, CCC, CCCC
D, DD, DDD, DDDD

I would like to use shell commands (sed, awk...) to copy the content of the 2 files (2x4 columns) into a final csv template file.

Expected result:
final.csv
A, AA, AAA, AAAA, C, CC, CCC, CCCC
B, BB, BBB, BBBB, D, DD, DDD, DDDD

Thank you guys for your help.

Code:

paste -d"," file1.csv file2.csv

Thank you bipinajith for your reply.
paste -d"," file1.csv file2.csv > final.csv will create a new output file.
In my template, I have some extra data I want to keep in the summary results.
So, I need to copy just the result of this command to my existent template file only in the first 8 columns change.