AWS Case Studies: Solutions and Costs for Startups at Different Growth Stages

1. Startup in the Ideation Stage (0 Customers)

Context

A startup in the development stage with:

• No customers
• MVP under development
• Limited budget
• Need for fast deployment

AWS Solution

• Application: Elastic Beanstalk

  • 1 t3.micro instance
  • Auto Scaling disabled
  • Cost: ~$8/month

• Database: RDS (MySQL)

  • db.t3.micro
  • 20GB storage
  • Cost: ~$12/month

• Storage: S3

  • 10GB of data
  • Cost: ~$0.25/month

Total Cost: ~$20/month

Is It a Good Idea?

Pros:

• Fast deployment
• No complex configuration
• Minimal cost
• Easy maintenance

Cons:

• Less flexible than custom solutions
• Higher cost than a traditional VPS
• Limited scaling

Recommendation:

For a startup with no customers, Elastic Beanstalk + RDS is an excellent solution for:

• Quickly validating an idea
• Testing the market
• Developing without worrying about infrastructure
• A total cost lower than a junior developer

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2. Startup in the Traction Stage (100 Customers)

Context

A SaaS startup with:

• 100 customers
• 500 active users
• 20%/month growth
• Need for stability

AWS Solution

• Application: ECS Fargate

  • 2 services (frontend/backend)
  • 2 vCPU, 4GB RAM
  • Auto Scaling enabled
  • Cost: ~$150/month

• Database: RDS (PostgreSQL)

  • db.t3.small
  • 50GB storage
  • Multi-AZ
  • Cost: ~$100/month

• Storage: S3

  • 200GB of files
  • Cost: ~$5/month

• CDN: CloudFront

  • 50GB transfer/month
  • Cost: ~$5/month

Total Cost: ~$260/month

Is It a Good Idea?

Pros:

• High availability
• Automatic scaling
• Reduced maintenance
• Optimal performance

Cons:

• Higher cost than Elastic Beanstalk
• More complex configuration
• Requires DevOps skills

Recommendation:

For a startup with 100 customers, ECS Fargate + RDS is ideal for:

• Handling growth
• Ensuring availability
• Preparing to scale up
• Cost per customer: ~$2.60/month

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3. Growing E-commerce Startup (1,000 Orders/Month)

Context

An online store with:

• 1,000 orders/month
• 10,000 products
• 50,000 visitors/month
• Traffic spikes during promotions

AWS Solution

• Frontend: S3 + CloudFront

  • Image storage: 100GB
  • Transfer: 500GB/month
  • Cost: ~$50/month

• Backend: Lambda + API Gateway

  • 100,000 requests/month
  • 1M GB-seconds
  • Cost: ~$5/month

• Database: DynamoDB

  • 10GB of data
  • On-demand mode
  • Cost: ~$25/month

• Payment: Stripe (via Lambda)

  • 1,000 transactions/month
  • Cost: ~$30/month

Total Cost: ~$110/month

Is It a Good Idea?

Pros:

• Very low cost per order (~$0.11)
• Automatic scaling for traffic spikes
• No server maintenance
• High availability

Cons:

• More complex serverless architecture
• Dependence on multiple services
• Harder debugging

Recommendation:

For a growing online store, a serverless architecture is ideal for:

• Handling traffic spikes
• Minimizing costs
• Focusing on the business
• Cost per order: ~$0.11/month

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4. Expanding Marketplace Startup (10,000 Sellers)

Context

A marketplace with:

• 10,000 sellers
• 100,000 products
• 5,000 transactions/month
• Need for multi-region

AWS Solution

• Application: EC2 Auto Scaling

  • t3.medium (2 instances)
  • Multi-region
  • Cost: ~$64/month

• Database: Aurora

  • db.t3.medium
  • 100GB storage
  • Cost: ~$150/month

• Storage: S3

  • 500GB of images
  • CloudFront
  • Cost: ~$50/month

• Cache: ElastiCache

  • 1 Redis cluster
  • Cost: ~$100/month

Total Cost: ~$364/month

Is It a Good Idea?

Pros:

• Full control over the infrastructure
• Optimal performance
• Multi-region for lower latency
• Robust scaling

Cons:

• Higher cost
• More maintenance
• Requires a DevOps team

Recommendation:

For an expanding marketplace, EC2 + Aurora is well suited for:

• Handling complexity
• Ensuring performance
• Preparing for international growth
• Cost per seller: ~$0.036/month

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5. Exploding Mobile Startup (1M Users)

Context

A mobile application with:

• 1 million users
• 100,000 daily active users
• Video streaming
• User data

AWS Solution

• Backend: Lambda + API Gateway

  • 10M requests/month
  • Cost: ~$20/month

• Database: DynamoDB

  • 100GB of data
  • Provisioned mode
  • Cost: ~$200/month

• Storage: S3

  • 1TB of videos
  • CloudFront for streaming
  • Cost: ~$100/month

• Push Notifications: SNS

  • 1M notifications/month
  • Cost: ~$1/month

Total Cost: ~$321/month

Is It a Good Idea?

Pros:

• Very low cost per user (~$0.0003)
• Automatic scaling
• No server maintenance
• Global performance

Cons:

• Complex architecture
• Dependence on multiple services
• Difficult debugging

Recommendation:

For a fast-exploding mobile app, a serverless architecture is ideal for:

• Handling millions of users
• Minimizing costs
• Focusing on the user experience
• Cost per user: ~$0.0003/month

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Cost and Growth Stage Comparison Table

Growth Stage	Main Solution	Monthly Cost	Cost per Customer/User
Ideation (0 customers)	Elastic Beanstalk + RDS	~$20	N/A
Traction (100 customers)	ECS Fargate + RDS	~$260	~$2.60/customer
E-commerce (1,000 orders)	Lambda + DynamoDB	~$110	~$0.11/order
Marketplace (10,000 sellers)	EC2 + Aurora	~$364	~$0.036/seller
Mobile (1M users)	Lambda + DynamoDB	~$321	~$0.0003/user

Tips for Each Stage:

1. Ideation Stage:

   • Start with Elastic Beanstalk
   • Use RDS for simplicity
   • Avoid complex services
   • Focus on the MVP

2. Traction Stage:

   • Move to ECS Fargate
   • Enable Multi-AZ
   • Add a CDN
   • Prepare for scaling

3. E-commerce Stage:

   • Use a serverless architecture
   • Optimize images
   • Enable caching
   • Monitor cost per order

4. Marketplace Stage:

   • Use EC2 for control
   • Add a Redis cache
   • Prepare for multi-region
   • Optimize queries

5. Explosion Stage:

   • Stay on serverless
   • Optimize DynamoDB costs
   • Use the CDN effectively
   • Monitor cost per user

Key Takeaways:

Choose your solution based on your stage:

• Ideation: Simplicity and minimal cost
• Traction: Stability and preparation for scale
• Growth: Performance and cost per unit
• Explosion: Automatic scaling and marginal cost