Is ACH available internationally?

I've been exploring various payment methods in the crypto finance space, and I've come across ACH as a popular option for domestic transactions. However, my business is increasingly expanding internationally, and I'm wondering: is ACH available for international payments? I understand it's primarily used for domestic electronic payments in the United States, but with the global nature of crypto, is there a way to leverage ACH for cross-border transactions? If not, what are some alternative payment methods that are both secure and efficient for international crypto transactions?