If you are doing competitive analysis for clients or prospects this tool is a must have tool. The API interface is a great way to enhance links to other evaluation tools, but that part is probably is not for technically faint of heart. The site audits are fairly easy to use and exploit, for top level insights and seem to have a much greater depth of capability than I have taken advantage of just yet. Site audits are helpful for evaluating key clients, and provides on-going regular emails as to how each site is doing.
SEMRush boasts of a number of tools which are aimed at improving SEO and content marketing as a whole. The primary goal of these tools is to help users laser focus their efforts on what matters to drive the most targeted traffic which consequently improves conversions. That said getting to grips with these tools for a newbie can take some time but which is made easier thanks to SEMRush’s various blogs and tutorials.