[Verse 1]
Back in two thousand three they started dreaming
Of a standard way to control access
OASIS took the lead, got the ball rolling
XACML would be built to last
Not just simple rules of who gets in
But attributes that paint the full scene
Context matters when decisions are made
The most sophisticated system you've seen
[Chorus]
XACML, the access control king
Attribute-based, it's the real thing
Request and response, policies that flow
Twenty years strong and still going strong
PEP, PDP, PIP, PAP - remember the four
XACML opens every door
[Verse 2]
Forget the old days of roles and groups
This standard thinks in attributes
Your department, location, time of day
The device you use, it all contributes
Interchange is the secret sauce
Policies travel from place to place
One format that everyone speaks
Putting access control in its proper space
[Chorus]
XACML, the access control king
Attribute-based, it's the real thing
Request and response, policies that flow
Twenty years strong and still going strong
PEP, PDP, PIP, PAP - remember the four
XACML opens every door
[Bridge]
When Alice needs that secret file
The system checks her profile
Not just her name, but where she sits
What time it is, if the context fits
Policy language speaks so clear
Expression and evaluation here
OASIS standard, tried and true
XACML's working hard for you
[Verse 3]
Four components in the architecture
Each one plays its vital part
Enforcement, decision, information, admin
It's really quite a work of art
From policy expression to evaluation
The protocol handles every call
Most established standard in the game
XACML stands above them all
[Final Chorus]
XACML, the access control king
Attribute-based, it's the real thing
Request and response, policies that flow
Twenty years strong and still going strong
PEP, PDP, PIP, PAP - remember the four
XACML opens every door
XACML opens every door