☁️ Cloud Platform Comparison

Azure vs AWS vs GCP

A Complete Guide for Your SaaS Application

Microsoft Azure

Enterprise Cloud Leader

Amazon AWS

Market Leader

Google Cloud

Innovation Pioneer

🛠️ Your Application Stack

Current Requirements

Frontend React Application
Backend Delphi Application (REST APIs)
Database SQL Server (~5GB per customer)
Customers ~20 customers (multi-tenant)
Users ~100 total users
API Load ~300k API hits/day total (~15k per customer)

🎯 Key Decision Factors

  • Small database size (under 5GB per customer)
  • Moderate API traffic
  • SQL-centric workload
  • Potential Windows/Delphi familiarity
  • Enterprise-grade security and compliance needs

📊 Detailed Feature Comparison

Criteria Microsoft Azure Amazon AWS Google Cloud
Performance & Compute Strong for Microsoft stack; VMs + Azure App Services. Excellent for .NET hybrid apps Excellent mature global infrastructure with highest compute performance (EC2, Lambda) High-performance network and low latency; great for microservices and containers
Security Enterprise-grade with built-in Azure AD, Defender, RBAC. Strong compliance support Extensive IAM, encryption tools, Shield & GuardDuty for security automation Built-in encryption by default, Cloud IAM, Security Command Center
Compliance Excellent global compliance (HIPAA, GDPR, ISO). Best with existing MS licenses Broadest compliance coverage across industries, long maturity in regulated sectors Strong compliance but slightly smaller footprint than AWS/Azure
Scalability & Availability Auto-scaling, global regions, hybrid support (Azure Stack). Good regional availability Industry leader in scalability; largest number of regions and AZs; very mature auto-scale Excellent scaling and global backbone network, fewer regions than AWS/Azure
Managed Services Great PaaS (App Service, Azure SQL, Functions). Best if existing MS stack Exceptional breadth (RDS, Lambda, ECS/EKS, App Runner). Most mature managed options Strong managed services (Cloud SQL, GKE, App Engine) especially for containers/analytics
License Cost ✅ Azure Hybrid Benefit reduces cost for Windows/SQL Server ❌ No bundled software licensing, modular services. Complex cost optimization Transparent pricing with sustained use discounts; some services can be pricier
Storage Services Blob storage competitive, integrates with Azure SQL and storage tiers S3 & EBS highly scalable, mature ecosystem; many storage classes Generally competitive, often slightly cheaper for some storage types
Database Services Azure SQL managed database excellent for SQL workloads; great tool integration RDS / Aurora offers broad options (MySQL/PostgreSQL/SQL Server) Cloud SQL good for managed SQL; strong analytics (BigQuery)
Load Balancing Azure Load Balancer, Application Gateway with WAF Elastic Load Balancing (ALB/NLB) — very mature and flexible Cloud Load Balancing — global SSD-backed load balancing
General Cost Competitive pricing; cheaper if you already use Microsoft products Highest flexibility but complex cost structure — may result in higher costs Usually transparent and flexible pricing; strong long-term discounts
Ease of Use Easy for teams familiar with Microsoft tech. Good UI and tooling Steeper learning curve but rich tooling ecosystem Simplified UX, easy onboarding for new teams
Ecosystem & Community Strong enterprise adoption; second largest market share Largest community and ecosystem; most documentation & examples Growing, especially among data/ML communities

🔧 Services Best Fit for Your Stack

Criteria Azure AWS GCP
Best Service Fit App Service + Azure SQL EC2 / App Runner + RDS Cloud Run / GCE + Cloud SQL
Performance for Your Load Very stable for low–medium API traffic Excellent, slightly overkill for current needs Excellent, very efficient
API Load Handling ✅ Easily handles 15k/day/instance ✅ Easily handles ✅ Easily handles
Managed SQL Quality Azure SQL (very mature) RDS (very mature) Cloud SQL (simple & fast)
Load Balancer App Gateway / Front Door ALB / NLB Global LB (built-in)
License Cost Advantage ✅ Best if you use MS licenses ❌ Separate SQL/Windows licensing ❌ No license reuse
Ease of Operations Easy for MS teams More services = more complexity Simplest operations
Cost Transparency Medium Complex Best
Best For Microsoft-heavy stacks Long-term large-scale growth Cost-efficient SaaS

💰 Cost Breakdown (20 Customers)

Note: These are ballpark estimates for decision-making, not exact quotes. Actual costs may vary based on specific configurations and usage patterns.

Per Customer Monthly Cost

Component Azure AWS GCP
App / VM (2 vCPU, 4 GB RAM) $35 – $45 $40 – $50 $30 – $40
Managed SQL (<5 GB) $20 – $30 $25 – $35 $20 – $30
Storage + Backup $5 $5 $5
Load Balancing $5 – $10 $8 – $12 $5
Per Customer Total $65 – $85 $80 – $100 $60 – $80

Total Monthly Cost (20 Customers)

Azure

$1,300 – $1,700

Best value with MS licenses

AWS

$1,600 – $2,000

Most features, highest cost

GCP

$1,200 – $1,600

Lowest cost option

🧠 When to Choose Each Platform

✅ Choose Azure If:

  • 🏢 Your team uses Microsoft tools (Visual Studio, Windows Server, SQL Server)
  • 💰 You have existing Microsoft licenses (Azure Hybrid Benefit)
  • 🔐 You need enterprise-grade security with Azure AD integration
  • 🗄️ SQL Server is your primary database
  • 🎯 You want simplified identity/AD integration
  • 📊 You're building enterprise SaaS applications

🚀 Choose AWS If:

  • 📈 You anticipate rapid growth beyond 20 customers
  • 🛠️ You need the broadest range of services and tools
  • 🌍 Global infrastructure and scalability are critical
  • 👥 You already have AWS expertise in your team
  • 🔮 You want future-proof architecture with exotic services
  • 📚 You value the largest community and documentation

💡 Choose GCP If:

  • 💵 Cost optimization is your top priority
  • 🌐 Networking performance matters most
  • ⚡ You want simpler, transparent pricing
  • 🐳 You're building modern containerized applications
  • 📊 You need strong data analytics capabilities
  • 🚀 You want fast autoscaling for small workloads

🏗️ Recommended Architecture

🏆 BEST OVERALL: Azure

Why Azure Wins for Your Case:

✅ SQL-Centric Workload Native SQL Server support with excellent tooling
✅ Windows/Delphi Familiarity Seamless integration with Windows ecosystem
✅ Per-Customer Isolation Easy multi-tenant architecture
✅ Managed SQL Excellence Azure SQL Database is mature and reliable
✅ License Cost Savings Azure Hybrid Benefit reduces total cost
✅ Enterprise Compliance Strong security and compliance features

Azure Architecture Blueprint

React Frontend
Azure Static Web Apps
→
Backend APIs
Azure App Service (per customer)
→
Database
Azure SQL (Basic/DTU)
Authentication
Azure AD B2C
+
Load Balancer
Azure Front Door

🥈 Alternative Recommendations

🥈 Best Low-Cost & Simple Operations: GCP

Choose GCP if:

  • Cost sensitivity is very high
  • You want simpler, more transparent billing
  • You are open to Cloud Run (serverless APIs)
  • You prefer modern DevOps workflows
  • Networking performance is critical
Estimated Savings: $100-400/month compared to Azure

🥉 Use AWS Only If:

AWS is powerful but may be overkill for your current scale

  • You expect rapid growth (100s+ customers soon)
  • You need many advanced services in the future
  • You already have AWS expertise in-house
  • You require the absolute largest global infrastructure
  • You're building a complex, service-heavy architecture
Additional Cost: $300-500/month compared to Azure

🔧 How Each Platform Handles Your Stack

React + Backend + SQL Compatibility

Component Azure Solution AWS Solution GCP Solution
React Frontend Azure Static Web Apps, CDN S3 + CloudFront, Amplify Cloud Storage + Cloud CDN
Delphi Backend Azure App Service, VMs EC2, App Runner, ECS Compute Engine, Cloud Run
SQL Database ✅ Azure SQL Database (native) RDS SQL Server Cloud SQL for SQL Server
Load Balancing Azure Load Balancer, Front Door ALB, NLB Cloud Load Balancing
Auto-Scaling Built-in autoscale groups Auto Scaling Groups Managed Instance Groups
Monitoring Azure Monitor, Application Insights CloudWatch, X-Ray Cloud Monitoring, Cloud Trace
Backup & Recovery Azure Backup, SQL automated backups AWS Backup, RDS snapshots Cloud SQL backups, snapshots

💡 Key Insights:

  • All three platforms fully support your stack requirements
  • Azure has the advantage for SQL Server workloads with native integration
  • Delphi backend can run on VMs or containers on any platform
  • Managed SQL options simplify backups and scaling for your small databases

📋 Quick Reference Summary

Aspect Best Choice Why
Overall Winner Azure Best balance of cost, SQL integration, enterprise features
Lowest Cost GCP Transparent pricing, sustained use discounts
Most Scalable AWS Largest global infrastructure, most regions
Best for SQL Azure Native SQL Server support, excellent tooling
Easiest to Use GCP Simplified UX, straightforward pricing
Most Services AWS Broadest service catalog, largest ecosystem
Best for Microsoft Stack Azure Azure Hybrid Benefit, seamless integration
Best Compliance Azure / AWS Both have extensive compliance certifications

⚖️ Pros & Cons Summary

Microsoft Azure

✅ Pros

  • Excellent SQL Server integration
  • Azure Hybrid Benefit reduces costs
  • Strong enterprise security (Azure AD)
  • Great for Microsoft tech stack
  • Simplified compliance management
  • Good PaaS offerings

❌ Cons

  • Fewer global regions than AWS
  • Less mature container ecosystem than GCP
  • Pricing can be complex
  • Smaller community than AWS

Amazon AWS

✅ Pros

  • Largest service catalog
  • Most global regions and AZs
  • Biggest community and ecosystem
  • Most mature cloud platform
  • Extensive documentation
  • Best for long-term scaling

❌ Cons

  • Most expensive option
  • Complex pricing structure
  • Steeper learning curve
  • Overkill for current scale
  • No license bundling benefits

Google Cloud (GCP)

✅ Pros

  • Lowest cost option
  • Transparent, simple pricing
  • Excellent networking performance
  • Strong container support (GKE)
  • Easy to use interface
  • Great for data analytics

❌ Cons

  • Fewer regions than Azure/AWS
  • Smaller enterprise adoption
  • Less mature ecosystem
  • Limited Windows/SQL Server expertise
  • Smaller community

🚀 Implementation Tips

Starting with Azure? Follow This Path:

  1. Start Small: Deploy one customer instance as a pilot
  2. Use Managed Services: Azure App Service + Azure SQL Database
  3. Enable Monitoring: Set up Application Insights early
  4. Implement CI/CD: Use Azure DevOps or GitHub Actions
  5. Configure Auto-scaling: Set up autoscale rules based on CPU/memory
  6. Set Up Backups: Enable automated SQL backups and retention policies
  7. Secure Everything: Implement Azure AD, managed identities, and Key Vault

🎯 Best Practices for Your Scale:

Use Basic/Standard Tiers Don't overprovision - Basic/Standard tiers are sufficient for 5GB databases
Implement Resource Tagging Tag resources by customer for easy cost tracking
Set Up Budget Alerts Configure spending alerts to avoid surprises
Use Reserved Instances Commit to 1-year reservations for 30-40% savings
Enable Monitoring Track performance metrics and set up alerts
Plan for Growth Design architecture that scales as customer base grows

🏆 Final Recommendation

👑 Azure Wins! 👑

The Best Choice for Your Application

Why Azure is the Winner:

1. SQL-Centric Workload Match: Azure SQL is purpose-built for your needs with excellent performance for 5GB databases

2. Cost-Effective: Azure Hybrid Benefit can save 40-50% on Windows/SQL Server licensing

3. Right-Sized for Your Scale: Perfect for 20 customers with room to grow to 100+

4. Enterprise Ready: Built-in security, compliance, and monitoring tools

5. Developer Friendly: Great integration with tools your team likely already uses

6. Managed Services: Azure App Service + Azure SQL = minimal operational overhead

💰 Expected Monthly Investment

$1,300 – $1,700 /month

For 20 customers with full managed services, backups, monitoring, and enterprise security

🎯 Next Steps:

  1. Sign up for Azure account (free tier available for testing)
  2. Create a pilot deployment for 1-2 customers
  3. Evaluate performance and cost for 1 month
  4. Gradually migrate remaining customers
  5. Optimize costs with reserved instances after 3 months

🎯 Quick Decision Matrix

Use this to make your final decision

Your Situation Recommended Platform Key Reason
Using Microsoft products (Windows, SQL Server) Azure License savings + seamless integration
Need lowest possible cost GCP $100-400/month savings
Expecting 100+ customers within 6 months AWS Best long-term scalability
SQL database is core to your app Azure Native SQL Server support
Want simplest operations GCP Easy UI and transparent billing
Team already knows AWS AWS Leverage existing expertise
Need enterprise compliance (HIPAA, SOC2) Azure Excellent compliance support
Building container-based microservices GCP Best Kubernetes support (GKE)
Want most service options AWS Broadest service catalog
Your exact scenario (20 customers, 5GB SQL, React+Delphi) Azure ⭐ Perfect fit for all requirements

📚 Additional Resources

🔷 Azure Resources
  • Azure Pricing Calculator
  • Azure Documentation
  • Azure SQL Database Docs
  • Azure App Service Guide
🔶 AWS Resources
  • AWS Pricing Calculator
  • AWS Well-Architected Framework
  • RDS Documentation
  • EC2 Instance Types
☁ GCP Resources
  • GCP Pricing Calculator
  • Cloud Architecture Center
  • Cloud SQL Documentation
  • Compute Engine Guide

Ready to Get Started with Azure? 🚀

Azure provides the best balance of cost, performance, and features for your application.
Start with a pilot deployment and scale as you grow!

Questions? Review this presentation or consult with your development team.