According to Oxford Languages, an advertisement is “a notice or announcement in a public medium promoting a product, service, or event.” But this isn’t the only advertising definition out there. The Advertising Association of the UK‘s Jeremy Bullmore came up with a definition of advertising as “any paid-for communication intended to inform and/or influence” in 1975. He later updated this to include non-paid advertisements. These definitions are relatively vague because it’s tricky to define ads in any great detail due to the variety of mediums they can come in. For example, an advertisement on a park bench is very different from a creative online advertising campaign on Facebook or Instagram. Establishing the objectives of advertising is essential in marketing, regardless of how you choose to run your advertising campaigns. Below, we’re going to look at the importance of advertising and types of advertising, with a series of good advertisement examples that you can use for inspiration for your own ad ideas.