Ad posting is the term that can be defined as placing advertisements for products, services etc through various means of advertising platforms.It means if you have any product or service and you want people to look at the product or service you are selling, buy them if they like, then you need to post advertisement by different means. Different means here means it can be online ad posting or physical ad posting (banners). You would have banner posting during elections in your country elections at local or national level.