Do I need WordPress Multisite feature for this structure? -

i need advice regarding web structure.

there 2 domains: www.aaa.com , www.bbb.com

they both should share same content of blogs more directories. when user access blogs, don't need redirect other domain people can access with

www.aaa.com/blog or www.bbb.com/blog

with structure, need use wordpress multisite?

if blogs same, don't need de multisite. feature allows multiple virtual sites share single wordpress installation, if same site, don't need multisite.