Publishers are trained on how to build the landing pages based on the style guide for a specific website. All of the copy and image assets are provided by the Campaign manager. Next is the creation of the landing pages and uploading the content including meta data for SEO. Occasionally, we do edit, resize and optimize images in Photoshop if the image assets provided are raw versions. After all the pages has been created, we do proof reading and quality assurance  ( ensuring there are no broken layouts and all links are correct and working well ) before submitting the URLs back to the campaign manager for the final QA.