How long does it take to complete the SEO work?
Despite the modern technologies that are behind search and are constantly evolving, SEO still boils down to creating a sufficiently expert and authoritative response that can be trusted (EAT — expertise, authority, trust) so that the system considers your content the best response to the query. This means that for the same query, there must be completely different results, depending on the person who is searching in certain circumstances. All we can do as specialists to meet Google’s requirements is look at the content and site from afar and assess the situation strategically, and then dive into content production and link profile building, experimenting with tactics and strategies, showing ourselves to be an authoritative expert who can be trusted.
This means that there can always be SEO work. Read some information of the RankBrain AI search algorithm to understand more