Why do banks use XRP?

I'm curious to know, why do banks opt to use XRP? I've heard of its popularity in the cryptocurrency sphere, but I'm not quite sure about its specific benefits for banking institutions. Could you elaborate on the reasons behind this choice? Is it because of its fast transaction speeds? Or does it offer cost-effective solutions for cross-border payments? I'm also interested in knowing if banks see XRP as a secure and reliable platform for their financial transactions. It would be great if you could provide some insights into this matter.