Cloud Spawning is the unofficial term used to describe the action of spawning an item from a user's Inventory using a resdb link. Doing this currently and easily requires a mod (Show Delegates from Arti) that can get the resdb link and adding it to several components to make spawning that item possible. It is also one of the things to avoid.
Here is a tutorial on how to unofficially Cloud Spawn.
Methods of Cloud Spawning
Copy & Paste
There is a certain way of just using components to copy and then paste in the item from an inventory. RedX uses something similar to this to spawn out items.
Components and Method Proxies
This way allows for full control of how you want to spawn out the item from an inventory. This needs a mod to show the delegates and to get the Method Proxy nodes, then once called, will spawn the item.
Editor's Note: When This feature is officially supported, be absolutely sure to archive this page or description here for historic reasons!