What is elk for logging?

Could you please elaborate on what "elk for logging" means in the context of cryptocurrency and finance? Is this a reference to a specific tool, service, or technology used for tracking or recording transactions, similar to blockchain technology? Or is it perhaps a misinterpretation or a reference to an unrelated field, such as wildlife conservation or forestry? I'm curious to understand how this term relates to the field of cryptocurrency and finance, and if it's a commonly used or recognized term within the industry.