Sometimes a potential client will ask us : “Do you use templates to build your websites?”, or also “What do you [platform] use to build your websites”.
The answers are : Yes/No and Whatever works for your business!
First of all, we are a Duda Pro partner, they cater to design agencies, and we primarily use them for our website development. We can use Wordpress, but it will likely cost you 3x the price . We also recently starting using another design-agency-specific platform called Webflow.
Again, we use whatever it takes to build a performance based website that fits both your budget and your goal.