It's very simple to use as it has user friendly UI with drag & drop feature for integration of different services (eg - API Gateway or CDN). Even though I have used this product from last 1 year but still there are some new features which can be added in future releases such that we don't need any expert knowledge/training before using them effectively! We needed something like Zuul proxy where our developers could easily integrate third party APIs without changing their code at all so they just write one line instead two lines when integrating 3rd parties apiGateway is doing exactly what i want!! I like that it's easy to use for basic deployments. It is also very flexible so you can create your own rules. Nothing really. The UI could be more user friendly but overall not much else. We deployed this in our microservices architecture using dockerized applications running under Kubernetes. This helped us deploy faster and easier than other tools we were considering.