I see this word in many places but don't get it.

From Wikipedia,

In message-oriented middleware solutions, fan-out is a messaging pattern used to model an information exchange that implies the delivery (or spreading) of a message to one or multiple destinations possibly in parallel, and not halting the process that executes the messaging to wait for any response to that message.

but I don't know what it means under other contexts, for example,

• AWS Kinesis enhanced fan-out feature: https://docs.aws.amazon.com/streams/latest/dev/enhanced-consumers.html
• Fanout load test on a distributed service

Can you please explain this term to me? are there other places use this term? Thank you.

I see this word in many places but don't get it.

From the Wikipedia,

In message-oriented middleware solutions, fan-out is a messaging pattern used to model an information exchange that implies the delivery (or spreading) of a message to one or multiple destinations possibly in parallel, and not halting the process that executes the messaging to wait for any response to that message.

but I don't know what it means under other contexts, for example,

• AWS Kinesis enhanced fan-out feature
• Fanout load test on a distributed service

Can you please explain this term to me? Are there other places using this term? Thank you.