What does Braintrust do?

Could you please explain what Braintrust is and what it does? I've heard it's a platform in the cryptocurrency and finance industry, but I'm not entirely sure what services it offers or how it operates. Is it a decentralized network? Does it focus on a specific niche within the crypto space? I'm particularly interested in understanding its purpose and how it benefits users. Thank you for shedding some light on this topic.