Businesses involved in planning advertising activities help organisations decide how to communicate with potential customers and where advertising should appear. They may research audiences, competitors and markets, then develop a campaign strategy based on the client's objectives, intended audience and available budget. Planning can cover traditional media such as newspapers, magazines, radio and outdoor advertising, as well as digital channels including search engines, social media, websites and online video. Typical services include selecting media channels, scheduling advertisements, advising on campaign timing and allocating budgets across different placements. These businesses may work with creative teams or external suppliers to coordinate adverts, check that materials meet the requirements of each channel and oversee their delivery.