I hope you and your web designer or web developer are talking about website traffic at the beginning of the website building process. Unless your website is just a hobby, you need to be concerned about getting visitors to your website.
There are many strategies for getting traffic to your site. Believe me, I've tried many of the them. It comes down to this - time. Keyword research takes time and tweaking is a given once you're up and running. It's a moving target and you need to keep an eye on your target market.
The most effective method I've found for driving website traffic to your website is Hubspot.com. Their web software for keyword research is thorough and it works. They also give you the training you need to make the best use of their software. Finally, their methodology is clearly written and gives you a step-by-step method of creating a successful website. And success, to me, equals qualified website traffic.
Isn't that the bottom line?