AWS Case Studies: Return on Investment for Enterprises

1. Regional Bank (€500,000/year in Savings)

Background

A regional bank with:

• 50 branches
• 100,000 customers
• Legacy infrastructure
• IT costs: €2M/year

Issues Identified

• On-premises servers: 200 servers (~€800,000/year)
• Software licenses: Oracle, Windows Server (~€400,000/year)
• Maintenance: 15 IT employees (~€600,000/year)
• Energy and space: Data center (~€200,000/year)

AWS Solution

• Migration to AWS:
  • EC2 Reserved Instances (~€300,000/year)
  • RDS Aurora (~€100,000/year)
  • AWS Managed Services (~€150,000/year)
  • Team training (~€50,000/year)

Results

• Annual savings: €500,000 (25% of costs)
• ROI: 200% over 3 years
• Availability: 99.99% vs. 99.9%
• Time-to-market: -40%

Selling Points

• Immediate savings of €500,000/year
• Reduced technical debt
• Improved security
• Infrastructure modernization

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2. Insurance (€1.2M/year in Optimization)

Background

An insurance company with:

• 1M customers
• 5,000 employees
• Legacy applications
• Cloud costs: €3M/year

Issues Identified

• EC2 overuse: 500 instances (~€1.5M/year)
• Inefficient storage: Unoptimized S3 (~€500,000/year)
• Database: Oversized RDS (~€400,000/year)
• Unused services: ~€600,000/year

AWS Solution

• Infrastructure optimization:
  • Reserved Instances (40% savings)
  • S3 Lifecycle Policies
  • RDS Auto Scaling
  • Resource clean-up

Results

• Annual savings: €1.2M (40% of costs)
• ROI: 300% over 1 year
• Performance: +30%
• Maintenance: -50%

Selling Points

• Immediate savings of €1.2M/year
• Improved performance
• Reduced complexity
• Better cost visibility

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3. Large-Scale Retail (Migration from €2M to €800,000/year)

Background

A retail chain with:

• 200 stores
• 10,000 employees
• Legacy management system
• IT costs: €2M/year

Issues Identified

• On-premises ERP: Dedicated servers (~€800,000/year)
• Database: Oracle (~€400,000/year)
• Maintenance: In-house team (~€600,000/year)
• Licenses: Proprietary software (~€200,000/year)

AWS Solution

• Migration to SAP on AWS:
  • SAP HANA on EC2 (~€300,000/year)
  • AWS Managed Services (~€200,000/year)
  • Team training (~€100,000/year)
  • AWS Support (~€200,000/year)

Results

• Annual savings: €1.2M (60% of costs)
• ROI: 250% over 2 years
• Availability: 99.99%
• Scalability: +200%

Selling Points

• Savings of €1.2M/year
• System modernization
• Greater agility
• 24/7 support

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4. Manufacturing (€800,000/year in Optimization)

Background

A manufacturing group with:

• 10 factories
• 5,000 employees
• IoT and analytics
• Cloud costs: €1.5M/year

Issues Identified

• IoT Hub: Oversized Azure deployment (~€400,000/year)
• Analytics: Unoptimized clusters (~€300,000/year)
• Storage: Unstructured data (~€200,000/year)
• Licenses: Microsoft (~€600,000/year)

AWS Solution

• Migration to AWS IoT:
  • IoT Core (~€100,000/year)
  • Kinesis Analytics (~€150,000/year)
  • S3 Intelligent Tiering (~€50,000/year)
  • AWS Managed Services (~€200,000/year)

Results

• Annual savings: €800,000 (53% of costs)
• ROI: 180% over 1 year
• Performance: +40%
• Maintenance: -60%

Selling Points

• Savings of €800,000/year
• Better data analysis
• Reduced licensing costs
• Improved technical support

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5. Healthcare (€1.5M/year in Modernization)

Background

A hospital group with:

• 5 hospitals
• 3,000 employees
• Medical applications
• IT costs: €3M/year

Issues Identified

• Legacy infrastructure: Aging servers (~€1M/year)
• Security: Outdated compliance (~€500,000/year)
• Maintenance: Overloaded team (~€800,000/year)
• Licenses: Medical software (~€700,000/year)

AWS Solution

• Migration to AWS Healthcare:
  • AWS Healthcare Competency
  • HIPAA-compliant infrastructure
  • AWS Managed Services
  • Team training

Results

• Annual savings: €1.5M (50% of costs)
• ROI: 200% over 2 years
• Security: 100% compliance
• Availability: 99.99%

Selling Points

• Savings of €1.5M/year
• Regulatory compliance
• Better data security
• Specialized healthcare support

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ROI Comparison Table

Sector	Initial Cost	Annual Savings	ROI	ROI Timeline
Banking	€2M	€500,000	200%	3 years
Insurance	€3M	€1.2M	300%	1 year
Retail	€2M	€1.2M	250%	2 years
Manufacturing	€1.5M	€800,000	180%	1 year
Healthcare	€3M	€1.5M	200%	2 years

Selling Points by Sector:

1. Banking:

   • Immediate savings of €500,000/year
   • Infrastructure modernization
   • Improved security
   • Reduced maintenance costs

2. Insurance:

   • Cloud cost optimization
   • Improved performance
   • Better cost visibility
   • Reduced complexity

3. Retail:

   • ERP migration to the cloud
   • Reduced licensing costs
   • 24/7 support
   • Greater agility

4. Manufacturing:

   • IoT and analytics optimization
   • Reduced licensing costs
   • Better data analysis
   • Improved technical support

5. Healthcare:

   • Regulatory compliance
   • Data security
   • Specialized support
   • System modernization

Key Takeaways for Consulting:

Key points to make your case:

• Significant, quantified savings
• Clear, measurable ROI
• Improved performance
• Reduced risk
• Support and expertise
• Infrastructure modernization