Securing APIs with AWS API Gateway & IAM Best Practices
Our client is a mid-sized eCommerce company operating across North America and Europe. Their platform relies heavily on APIs to connect mobile apps, payment gateways, inventory systems, and third-party vendors.
As customer demand grew, their APIs became the backbone of daily operations. However, due to weak API Gateway configurations and insecure authentication mechanisms, they faced increasing risks of unauthorized access and potential data exposure.

The Challenge
The client faced three major security concerns:
1. Insecure APIs
- APIs were exposed directly to the internet without authentication.
- Sensitive endpoints could be accessed without proper security checks.
2. Weak API Gateway Configurations
- No throttling limits, leaving APIs vulnerable to DDoS and brute-force attacks.
- Missing CORS policies, which created cross-origin security gaps.
- Lack of centralized logging and monitoring.
3. Compliance Risks
- Handling customer data without robust encryption.
- Non-compliance with PCI DSS (payment card industry standards) and GDPR requirements.
The client urgently needed a secure, scalable, and compliant API management strategy on AWS.
Our Solution
We are eDelta Corporation, an AWS Select Tier Partner, and we delivered a comprehensive API security framework:
1. Strengthened API Gateway Security
- Configured AWS API Gateway with proper authentication & authorization.
- Applied rate limiting and throttling policies to prevent abuse.
- Enabled CORS configurations for controlled cross-origin requests.
2. Authentication & Access Control
- Integrated AWS IAM roles & policies with least privilege access.
- Implemented OAuth 2.0 & JWT tokens for secure user authentication.
- Added AWS Cognito for user sign-in and identity federation.
3. Encryption & Compliance
- Enabled TLS/SSL for data in transit.
- Encrypted sensitive data with AWS KMS.
- Configured API logging and auditing for PCI DSS & GDPR compliance.
4. Monitoring & Threat Detection
- Enabled AWS CloudWatch for real-time monitoring of API traffic.
- Deployed AWS WAF (Web Application Firewall) to filter malicious traffic.
- Set up AWS GuardDuty to detect anomalies and suspicious activity.
The Results
Within 90 days, the client achieved
- 100% compliance with PCI DSS & GDPR standards.
- Zero security incidents after API hardening.
- 30% performance improvement with optimized API Gateway configuration.
- Enhanced customer trust by ensuring data security and privacy.
Business Impact
By partnering with eDelta Corporation, an AWS Select Tier Partner, the client:
- Built a secure API ecosystem that could scale with their business.
- Gained real-time visibility into API traffic and threats.
- Strengthened brand trust and compliance posture in highly regulated industries.
- Reduced the risk of data breaches, fraud, and service disruptions.
Are Your APIs Secure Enough?
Unsecured APIs are one of the biggest entry points for cyberattacks. At eDelta Corporation, an AWS Select Tier Partner, we help businesses harden their API Gateway, implement IAM best practices, and achieve regulatory compliance.
