Key-value pairs that grant an executable permission to use a service or technology.
Documentation - https://developer.apple.com/documentation/bundleresources/entitlements
Examples
iOS Push Notifications - aps-environment
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>aps-environment</key>
<string>development</string>
</dict>
</plist>