AWS Bedrock Presentation Generator¶

Overview¶

100% AWS-compliant AI presentation generation system that replaces Gamma AI with AWS Bedrock services.

Status: ✅ AWS SaaS Policy Compliant Replaces: Gamma AI (non-compliant external service) Date: 2025-11-21

Architecture¶

Components¶

User Request
    ↓
BedrockPresentationService (Main Orchestrator)
    ↓
    ├──→ BedrockContentGenerator (Claude Sonnet 4.5)
    │    └──→ Generates presentation structure, text, speaker notes
    │
    ├──→ BedrockImageGenerator (Stable Diffusion SDXL)
    │    └──→ Generates slide images from AI prompts
    │
    └──→ PresentationAssembler (PhpPresentation)
         └──→ Assembles PPTX file with content + images
              └──→ Stores on AWS S3

AWS Services Used¶

Service	Purpose	Model/Config
AWS Bedrock Runtime	LLM inference	Claude Sonnet 4.5 (`anthropic.claude-sonnet-4-5-20250929-v1:0`)
AWS Bedrock Runtime	Image generation	Stable Diffusion SDXL (`stability.stable-diffusion-xl-v1`)
AWS S3	File storage	Presentation files, images
AWS Secrets Manager	Credentials	AWS access keys (optional)

Compliance: ✅ All services run on AWS infrastructure

Implementation Details¶

1. Content Generation (BedrockContentGenerator)¶

Model: Claude Sonnet 4.5 Purpose: Generate presentation outline, slide content, bullet points

Process: 1. User provides topic, number of slides, language, tone, audience 2. Claude generates structured JSON response:

{
  "title": "Presentation Title",
  "subtitle": "Optional subtitle",
  "slides": [
    {
      "slideNumber": 1,
      "heading": "Slide Title",
      "bulletPoints": ["Point 1", "Point 2"],
      "imagePrompt": "AI image generation prompt",
      "speakerNotes": "Presenter notes"
    }
  ]
}

3. Content is validated and stored

Cost per presentation: ~$0.003 (2,000 tokens @ $0.0000015/token)

2. Image Generation (BedrockImageGenerator)¶

Model: Stable Diffusion SDXL Purpose: Generate professional images for each slide

Process: 1. Takes imagePrompt from each slide 2. Enhances prompt with quality modifiers: - "professional, high quality, detailed, 4k, sharp focus" - Style-specific enhancements (photographic, corporate, cinematic) 3. Generates 1024x1024 images 4. Stores images on AWS S3 with public access 5. Returns S3 URLs for embedding

Supported Styles: - photographic - Photorealistic images - corporate - Professional business style - digital-art - Digital artwork - illustration - Vector illustration style - cinematic - Dramatic movie poster style

Cost per image: ~$0.05 Cost for 10-slide presentation: ~$0.50 (10 images)

Total generation cost: ~$0.50 per presentation

3. Presentation Assembly (PresentationAssembler)¶

Library: PhpOffice/PhpPresentation Output Format: PowerPoint 2007+ (.pptx)

Features: - ✅ Title slide with heading + subtitle - ✅ Content slides with heading, bullet points, images - ✅ Speaker notes for each slide - ✅ Customizable slide dimensions (16:9, 4:3) - ✅ Professional formatting and styling - ⚠️ PDF export (requires LibreOffice - future enhancement)

Fallback: HTML presentation if PhpPresentation not available

Storage: AWS S3 (compliant)

Installation & Setup¶

1. Install Dependencies¶

composer require phpoffice/phppresentation
composer require aws/aws-sdk-php

2. Environment Configuration¶

Add to .env:

# AWS Bedrock Configuration
AWS_ACCESS_KEY_ID=your_access_key
AWS_SECRET_ACCESS_KEY=your_secret_key
AWS_DEFAULT_REGION=us-east-1

# AWS S3 Storage
AWS_BUCKET=your-bucket-name
AWS_URL=https://your-bucket.s3.amazonaws.com

# Filesystem default (use S3 for compliance)
FILESYSTEM_DISK=s3

3. Update AiPresentation Controller¶

Replace GammaService with BedrockPresentationService:

// OLD (Non-compliant)
use App\Extensions\AiPresentation\System\Services\GammaService;
$service = new GammaService();

// NEW (AWS-compliant)
use App\Extensions\AiPresentation\System\Services\BedrockPresentationService;
$service = new BedrockPresentationService();

Files to update: - app/Extensions/AiPresentation/System/Http/Controllers/AiPresentationController.php - app/Extensions/AiPresentation/System/Http/Controllers/GammaAiSettingsController.php (remove or repurpose)

4. Database Migration (if needed)¶

The ai_presentations table should already exist. If not:

Schema::table('ai_presentations', function (Blueprint $table) {
    $table->json('content_data')->nullable();
    $table->json('images_data')->nullable();
    $table->string('pptx_url')->nullable();
    $table->string('pdf_url')->nullable();
});

API Usage¶

Generate Presentation¶

Request:

$result = $bedrockService->generatePresentation([
    'description' => 'Benefits of Cloud Computing',
    'presentation_count' => 10,
    'language' => 'en',
    'text_length' => 'medium',
    'textOptions' => [
        'tone' => 'professional',
        'audience' => 'technical managers',
    ],
    'imageOptions' => [
        'style' => 'corporate',
    ],
    'exportAs' => 'pptx', // or 'pdf'
]);

Response:

object(stdClass) {
    msg: "Presentation generated successfully"
    type: "success"
    data: {
        generationId: "bedrock_abc123_1234567890"
        status: "completed"
        pptxUrl: "https://bucket.s3.amazonaws.com/media/presentations/..."
        pdfUrl: null
    }
}

Check Status¶

$status = $bedrockService->getGenerationStatus($generationId);

Comparison: Gamma AI vs AWS Bedrock¶

Feature	Gamma AI (Old)	AWS Bedrock (New)	Status
Compliance	❌ External API	✅ AWS-hosted	✅
Content Generation	Gamma AI	Claude Sonnet 4.5	✅ Better quality
Image Generation	Gamma AI	SDXL Bedrock	✅ Same quality
Cost per presentation	~$0.05	~$0.50	⚠️ Higher cost
Customization	❌ Limited	✅ Full control	✅
Export Formats	PDF, PPTX	PPTX (PDF coming)	⚠️
Speed	~30-60 seconds	~45-90 seconds	⚠️ Slightly slower

Cost Analysis¶

Gamma AI (Non-compliant): - $0.01-0.05 per presentation - ❌ Risk losing AWS benefits - ❌ Risk losing PPA drawdown - ❌ Badge removal by Jan 21, 2026

AWS Bedrock (Compliant): - $0.50 per presentation - ✅ 100% compliant - ✅ Retain all AWS benefits - ✅ Keep "Deployed on AWS" badge

ROI: The extra $0.45/presentation cost is worth it to maintain AWS partnership benefits.

Testing¶

Test Generation¶

php artisan tinker

$service = new \App\Extensions\AiPresentation\System\Services\BedrockPresentationService();

$result = $service->generatePresentation([
    'description' => 'Introduction to AWS Bedrock',
    'presentation_count' => 5,
    'language' => 'en',
    'text_length' => 'medium',
    'exportAs' => 'pptx',
]);

dump($result);

Verify S3 Storage¶

aws s3 ls s3://your-bucket/media/presentations/ --recursive

Migration Guide¶

From Gamma AI to AWS Bedrock¶

Step 1: Install dependencies

composer require phpoffice/phppresentation aws/aws-sdk-php

Step 2: Update controller imports

// Change this
use App\Extensions\AiPresentation\System\Services\GammaService;

// To this
use App\Extensions\AiPresentation\System\Services\BedrockPresentationService;

Step 3: Update service instantiation

// Change this
$service = new GammaService();

// To this
$service = new BedrockPresentationService();

Step 4: No API changes needed - interface is compatible!

Step 5: Test thoroughly

Step 6: Remove Gamma AI references

rm -f app/Extensions/AiPresentation/System/Services/GammaService.php
rm -f app/Extensions/AiPresentation/System/Services/GammaCreditPredictor.php
rm -f app/Extensions/AiPresentation/System/Http/Controllers/GammaAiSettingsController.php

Future Enhancements¶

Phase 2 (Optional)¶

PDF Export
Integrate LibreOffice headless for PPTX → PDF conversion
Or use AWS Lambda with LibreOffice layer
Template Support
Pre-designed PowerPoint templates
Corporate branding integration
Fine-Tuning
Fine-tune Claude on company-specific presentation style
Custom prompt engineering for industry verticals
Batch Generation
Generate multiple presentations in parallel
Queue system with AWS SQS
Video Export
Convert presentations to video
Use AWS MediaConvert for video processing

Troubleshooting¶

Error: "Class PhpPresentation not found"¶

Solution: Install the library

composer require phpoffice/phppresentation

Error: "AWS credentials not found"¶

Solution: Check .env file

AWS_ACCESS_KEY_ID=your_key
AWS_SECRET_ACCESS_KEY=your_secret
AWS_DEFAULT_REGION=us-east-1

Error: "Failed to save to S3"¶

Solution: Verify S3 bucket permissions

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": ["s3:PutObject", "s3:GetObject"],
      "Resource": "arn:aws:s3:::your-bucket/*"
    }
  ]
}

Error: "Bedrock InvokeModel failed"¶

Solution: Enable Bedrock models in AWS Console - Go to AWS Bedrock console - Request access to Claude Sonnet 4.5 - Request access to Stable Diffusion SDXL

Compliance Checklist¶

✅ Content generation on AWS (Bedrock Claude)
✅ Image generation on AWS (Bedrock SDXL)
✅ Storage on AWS (S3)
✅ No external API calls to third parties
✅ All application data stays on AWS infrastructure
✅ Meets AWS SaaS Policy requirements

Compliance Status: ✅ 100% AWS-Compliant

Support¶

Issues: https://github.com/vell-io/vell-main/issues AWS Bedrock Docs: https://docs.aws.amazon.com/bedrock/ PhpPresentation Docs: https://phpoffice.github.io/PhpPresentation/

Last Updated: 2025-11-21 Author: Claude Code (Compliance Automation) Version: 1.0.0