Why Content-First Matters

Content Driven Development isn't just a process—it's a philosophy that prioritizes author needs and content reality over developer convenience.

Author Needs Come First

Authors are the primary users of the structures we create. When building for AEM Edge Delivery, the content models, block structures, and authoring patterns we design directly impact how easily authors can create and maintain content.

Content models must be:

• Intuitive: Authors should understand what goes where without extensive training
• Easy to work with: Creating content should feel natural, not like navigating a complex technical system
• Forgiving: Common mistakes should be easy to spot and fix
• Flexible: Authors need room for creativity within structure

This often means more complex decoration code. That's okay. Developer convenience is secondary to author experience.

Efficiency Through Preparation

Creating or identifying test content before coding isn't "extra work"—it's a multiplier that makes everything else faster and better.

Immediate Testing Capability

When you have test content ready before you write code:

• No need to stop development to create test scenarios
• Test as you write, catching issues immediately
• Faster iteration cycles
• More confidence in your implementation

Better PR Workflows

Test content serves double duty:

• Development testing during implementation
• PR validation links for PSI checks (required for all PRs)
• No scrambling to create content when you're ready to merge

Living Documentation

Well-structured test content often becomes:

• Author-facing examples and documentation
• Onboarding material for new team members
• Reference implementations for similar blocks
• Quality standards for content creation

Fewer Assumptions

Code-first development is full of assumptions. You assume:

• How authors will structure content
• What edge cases might appear
• How content will actually be used
• What reasonable defaults should be

Content-first development reveals reality. Real content shows:

• Actual author patterns and preferences
• Edge cases you never imagined
• Use cases that don't fit your assumptions
• Where your elegant design breaks down

The Cost of Skipping CDD

Every shortcut has a price:

Skipping content discovery:

• Build against imagined requirements
• Miss existing patterns and conventions
• Create inconsistent experiences
• Duplicate effort (content exists, you just didn't find it)

Skipping content modeling:

• Create developer-friendly but author-hostile structures
• Require extensive author training
• Generate support burden as authors struggle
• Need redesigns when reality doesn't match assumptions

Skipping test content creation:

• Can't validate during development
• Delay discovering issues until PR review
• Create technical debt (untested code paths)
• Rush content creation at PR time (poor quality examples)

When CDD Feels "Slow"

Sometimes CDD feels slower than jumping straight to code. That's an illusion.

Front-loaded time investment pays off:

• Time spent on content upfront = time saved debugging later
• Time spent on good content models = time saved on author support
• Time spent finding existing content = time saved on redundant work

The "fast" code-first approach:

1. Write code based on assumptions (fast)
2. Discover assumptions were wrong (slow)
3. Rewrite code to match reality (slow)
4. Create test content to validate (slow)
5. Fix bugs revealed by real content (slow)
6. Repeat steps 2-5 until it works (very slow)

The CDD approach:

1. Find or create content based on reality (moderate)
2. Write code against real content (fast)
3. Test continuously with known content (fast)
4. Ship with confidence (fast)

Content as a Contract

The initial content structure is a contract between authors and developers:

• Authors promise to structure content in a specific way
• Developers promise that structure will work correctly

Breaking this contract has consequences:

• Existing pages break
• Authors must rework content
• Trust erodes
• Technical debt accumulates

CDD makes this contract explicit and visible before code is written.

The CDD Mindset

Successful CDD requires shifting perspective:

From: "What can I build?" To: "What do authors need to create?"

From: "How should this work technically?" To: "How will authors actually use this?"

From: "This is the elegant solution." To: "This is the solution authors will understand."

From: "I'll test this later." To: "I'll test this as I build it."

This mindset shift is the foundation of sustainable, author-friendly AEM development.