Shogun allows you to create and edit most pages of your site:
Standard pages - including landing pages
Certain pages within your stores are controlled by either your theme or ecommerce platform, and due to this, these can not be edited within Shogun, these include the following:
The checkout page
The cart page
Your homepage (this can be overridden using this tutorial)
The blog feed page (though you can create and edit articles within Shogun)
Coming soon pages
404 pages