While everyone evaluates their options at this stage in the buying process, how carefully they evaluate their options depends a lot on their personality and the cost of the solution. Generally speaking, the more financially conservative your target audience is and expensive your solution is, the more comparison shopping your potential buyers will do.
Content piece engagement rate – If you have calls to action on multiple blog posts or other onsite content pieces, you’ll want to know which are sending the most converted customers through your funnel so that you can replicate your success by upgrading/updating that piece of content, sending paid traffic to that blog post, promoting it via email, and/or creating more content pieces like that. Tracking engagement rates on each CTA will give you this information (you can easily set up Google Analytics goals in order to see which posts drive more conversions).
If you're wondering what a sales funnel is, simply imagine a real-world funnel. At the top of that funnel, some substance is poured in, which filters down towards one finite destination. In sales, something similar occurs. At the top, lots of visitors arrive who may enter your funnel. However, unlike the real-world funnel, not all who enter the sales funnel will reemerge out from the other end.