The thirty seconds that follow "So, what do you do?"
The lift speech — elevator pitch, if you prefer the American — is the short, spoken answer to a question nobody asks that directly: who are you and why should I keep talking to you? The name comes from the idea of sharing a lift with someone important and having until the doors open. In practice you give it at conferences, in the corridor after a meeting, at the start of an interview when someone says "tell me about yourself," and to the new senior colleague who joins your table at lunch. Job seekers need one. So does anyone who works with people outside their own team.
Dos and don'ts. Do keep it under forty seconds; people stop listening around then. Do lead with what you do for whom, not your title — "I help small logistics firms stop losing paperwork" lands; "I'm a customer success coordinator" doesn't. Do end with something that invites a reply: a question, or a reason you're interested in them. Don't recite your CV in order. Don't use the words your company uses about itself. Don't apologise for anything — your English, your nerves, the fact that your job is hard to explain. And don't memorise it word for word; memorised speech sounds memorised.
Presentation voice. This isn't conversation. In conversation, English speakers link words, swallow syllables and let the pitch flatten; that's normal and it's what you're used to hearing. A lift speech is slower, with each word given more of its full shape, deliberate pauses instead of fillers, and stress placed firmly on the words that carry the meaning. Speak as though the listener is slightly further away than they are. It will feel unnatural. It sounds confident.
Last thing. Write it down once, say it out loud fifty times, and then throw the paper away. The version you can say while walking is the real one.