I just started playing around with deploying my own edx instance. And I want to achieve this same configuration. Anyone know what is this configuration called? and how can I achieve this?
@Vong_Vithyea_Srey, adding to what @swalladge mentioned, the pages that you see on edx.org is a part of their custom marketing site. You can achieve something similar if you build and use a marketing site (some relevant docs) for your Open edX instance.
You can also try out an existing marketing site solution like the Richie CMS to create a marketing site.