You could respond with a comment that acknowledges and appreciates their enthusiasm for composability, while keeping it positive and engaging. Here are a few suggestions:

- "Composability is indeed a game-changer It makes everything so much more flexible and efficient."
- "Absolutely love how composability can streamline processes and enhance innovation. Great point!"
- "Composability is the future It's amazing how it can help us build and adapt quickly."
- "Totally agree, composability is a powerful tool for creativity and problem-solving."

If you're unsure or just want to be friendly, you could also say:

- "Thanks for sharing your thoughts Composability is definitely an interesting topic."
- "Great to see you're passionate about composability. Keep innovating!"