External communication around a corporate milestone works best in layers. Start with the story: why is this milestone important, for whom and what does it say about your company? Write a 1-page A4 press release with key figures, quotes from leadership and a personal anecdote. Distribute it to trade media 1 week before the milestone and to regional newspapers on the day itself. In parallel, publish a blog post on your website for SEO. Use LinkedIn for a business audience with three contributions. A teaser beforehand, live photos during, and a thank-you message with figures afterwards. Instagram and Facebook work for atmosphere and team story. Send clients and partners a personal email. Invite them to the celebration or recall your shared history. Work with a fixed hashtag that combines the milestone and the company name, so all posts are findable. Afterwards, plan a 2-week thank-you campaign with testimonials, photos and a video aftermovie. Live Impact makes sure your milestone is noticed far beyond your own organisation.