What problems is Google Custom Search solving and how is that benefiting you?
Every Keyword Search Problem solved by Google Custom Search like as eager for something, motivational, and helpful for everything.
It depends on how you use the tool. For me, it is one of the most useful SEO tools even if I use it only in a limited way:
I use if for finding keywords with a decent number of impressions and some kind of SEO ranking. Next, I simply improve the content in order to rank even better for those keywords.
When I add new pages or change the structure of the site, I enter the URL to be crawled and indexed by Google. Using this, the new pages are indexed almost instantly.
Having a look at the Search Console’s keyword data gives me always new ideas for content. I have found the long-tail queries with questions especially interesting sources of ideas. Have a look at How to feed your content marketing machine with Google Analytics for even more ideas.
For technical web analytics, the Search console is an indispensable tool. I’m sure someone else will write about the benefits. Review collected by and hosted on G2.com.