Good CMS is always seo friendly and compatible with all types of websites. For example wordpress is best CMS ever in SEO Technology.
There are many like- Joomla also and in php we also can make custom cpanel.
CMS is also easy to understand , to use and to build new website easily.
There are many tools in CMSs which always helped out in seo point of view.
For example- in Wordpress there are many plugins used for seo i.e. SEO All in one pack is one of best plugin in wordpress.
Same like that - many things are very important and helpful in CMS by which we can make site easily and seo friendly.