What is ChatGPT and why is Microsoft buying into it?

Microsoft has announced a multi-year, multibillion dollar investment in artificial intelligence (AI) as it extends its partnership with OpenAI. OpenAI is the creator of popular image generation tool Dall-E and the chatbot ChatGPT. In 2019 Microsoft invested one billion dollars in the company, founded by Elon Musk and tech investor Sam Altman. The Windows and Xbox maker plans up to 10,000 redundancies, but said it would still hire in key strategic areas.