Advanced Platform Logic with Composition Functions
Build advanced S3 bucket platforms with Crossplane Composition Functions - learn by installing functions manually and implementing bucket arrays with sophisticated conditional logic that evolves your platform beyond basic compositions.

Lab Overview
Learn how to evolve your platform using Crossplane Composition Functions building on the previous lab. This focused lab teaches functions through hands-on installation and practical implementation, covering S3 bucket arrays and sophisticated conditional logic for real platform scenarios.
Learning Objectives:
- Apply storage bucket XRD and understand its schema for arrays and features
- Install composition functions manually (Go Templating, Auto Ready, Patch & Transform)
- Understand Pipeline vs Resources mode in compositions
- Build Go template logic for conditional S3 bucket configurations
- Implement dynamic bucket arrays with range loops and indexing
- Apply environment-based versioning (staging/prod only)
- Configure tier-based intelligent tiering (premium tier)
- Master debugging with trace commands for function pipeline troubleshooting
- Test single bucket and multi-bucket claims with AWS Console verification
Prerequisites
Setting Up Your Crossplane Platform Lab
Working with AWS Managed Resources Lab
Building Your First Composition Lab
Technologies Covered
Part of a Course
This lab is part of the Crossplane 101: Platform Engineering Fundamentals course
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