What is an apu apustaja?

Could you please clarify for me what an "apu apustaja" refers to in the context of cryptocurrency or finance? It's not a term that I'm immediately familiar with, so I'm curious to understand its meaning and relevance to our industry. Is it a specific type of technology, a service, or perhaps a role within the cryptocurrency ecosystem? I'd appreciate any insights you could provide to help me better understand this term.