Published November 7, 2026 · By Ailumic # How do I write an ad for my small business? Write one message for one kind of person: say what you offer and what to do next in plain words, and cut everything else, because an ad is seen for a moment. Fit the words to the format: a few on a banner, a headline and a sentence in a native ad, one picture and one step on a full screen. Then run it for a week, read the report and change one thing. ## Decide what the ad is for Pick one thing you want a person to do after seeing it: visit the shop, call, book, open the website. An ad that asks for three things gets none of them, because a person sees it for a moment and keeps one idea. ## Write for one kind of person Picture the person who should say yes: someone who lives near you, someone who has just moved, someone planning an event. Write to them, in the words they would use. An ad for everyone reads as an ad for no one. ## Say what you offer, then what to do The headline names the offer in plain words: what it is and, if it helps, where. The next line says the one step: come in, call, book, learn more. Leave out the history of the company and the list of everything else you do; the website is for those. ## Fit the words to the format - **Banner:** a few words and a clear picture. - **Native:** a headline that earns the click and one sentence under it. - **Full-screen:** one strong picture and one step. Our guide on [banner, native or full-screen](https://www.ailumic.com/guides/banner-native-or-full-screen/) says which suits what you have. ## What to leave out Words you cannot back up: “best”, “cheapest”, “guaranteed”. Anything in capital letters. A promise of a result. An ad that a person can check in the shop and find true is worth more than one that sounds bigger. ## If you would rather not write Ailumic drafts text from your website for you to edit or approve. Treat the draft as a first version: read it against the points above and change what does not sound like you. ## Then let the report edit it Run the ad for a full week, read what it did in [the report](https://www.ailumic.com/guides/how-to-read-an-ad-report/), and change one thing: the headline, the picture or the step. Changing everything at once teaches you nothing about which part mattered. Example Instead of “Quality baked goods at great prices, serving the community since forever”, a bakery writes “Fresh sourdough every morning on Elm Street. Come in before noon.” The first says nothing a person can act on; the second names the offer, the place and the step. Read next - [Banner, native or full-screen: which ad format should a small business choose?](https://www.ailumic.com/guides/banner-native-or-full-screen/) - [How do I read an ad report?](https://www.ailumic.com/guides/how-to-read-an-ad-report/) - [How Ailumic works](https://www.ailumic.com/platform/) Ready to try it? Ailumic is opening to its first advertisers in the United States. [Get early access](https://www.ailumic.com/start/) Guides ## More questions, answered first. - ### [How do real-time ad auctions work?](https://www.ailumic.com/guides/how-real-time-ad-auctions-work/) Every ad slot is sold in an auction that lasts a fraction of a second. Who bids, what decides the winner, who pays, and what it means for a small budget. Updated November 1, 2026 - ### [What is a CPM in advertising?](https://www.ailumic.com/guides/what-is-a-cpm/) CPM is the price of showing an ad one thousand times. Why ad space is priced per viewing, what moves the price, and why Ailumic publishes no price list. Updated November 1, 2026 - ### [Banner, native or full-screen: which ad format should a small business choose?](https://www.ailumic.com/guides/banner-native-or-full-screen/) A banner runs beside the content, a native ad sits in the feed, a full-screen ad fills an app between pages. How to pick one for the ad you have. Updated November 1, 2026 - ### [How much should a small business spend on ads to start?](https://www.ailumic.com/guides/how-much-to-spend-on-ads/) Size a first ad budget by what you can afford to learn from, not by a rule of thumb: enough to run a full week, small enough that a lesson with no sale is fine. Updated November 1, 2026 - ### [How do I read an ad report?](https://www.ailumic.com/guides/how-to-read-an-ad-report/) Read an ad report in order: times shown, clicks, cost, then where and when it ran. What the click-through rate tells you, and what to change next. Updated November 4, 2026 - ### [How long should an ad campaign run?](https://www.ailumic.com/guides/how-long-should-an-ad-run/) Run a first ad for a full week and no longer than it takes to learn one thing. Why a week, why not months, when to stop early and when to add budget. Updated November 1, 2026 - ### [What is programmatic advertising?](https://www.ailumic.com/guides/what-is-programmatic-advertising/) Programmatic advertising is ad space bought by software, one viewing at a time, in an auction. What it replaced and what it means for a small business. Updated November 7, 2026 - ### [What is a DSP, or demand-side platform?](https://www.ailumic.com/guides/what-is-a-dsp/) A DSP is software that bids for ad space on an advertiser’s behalf. How it differs from an ad exchange and a supply-side platform, and where Ailumic fits. Updated November 7, 2026 - ### [How do ads in mobile apps work?](https://www.ailumic.com/guides/how-mobile-app-ads-work/) An app sets aside ad slots, sells each one in an auction as it is about to appear, and draws the winning ad. What an advertiser chooses and sees afterwards. Updated November 7, 2026