API gateways are crucial in microservice architectures, acting as reverse proxies that manage, route, and secure API traffic. Public cloud API gateways, such as Azure API Management and AWS API Gateway, offer features like traffic management, security enforcement, and integration with other services. Ensuring strong API security through request-based measures and effective authentication and authorization strategies is essential for safeguarding data and services.

1. API GATEWAYS &
API SECURITY
Prince J
(2313213037012)

2. AGENDA
API Gateway
API Gateway in Public Cloud
Azure API Management
AWS API Gateway
API Security
Request-Based Security
Authentication and
Authorization
PRESENTATION TITLE 2

3. API GATEWAYS
Introduction

4. INTRODUCTION
 An API gateway is an essential component in modern microservice
architectures.
 It acts as a reverse proxy that routes client requests to appropriate
microservices.
Key Functions of an API Gateway:
• Request Routing: Directs incoming requests to the appropriate service or
endpoint based on the request path, method, headers, etc.
• Security: Handles authentication and authorization, ensuring that only valid
users can access the services.
• Load Balancing: Distributes incoming requests across multiple instances of
microservices to ensure no single instance is overwhelmed
INTRODUCTION 4

5. API GATEWAY IN PUBLIC CLOUD 5
API GATEWAY IN PUBLIC CLOUD
API Gateways in public clouds serve as a reverse proxy to accept all application programming
interface (API) calls, aggregate the various services required to fulfill them, and return the
appropriate result. They provide a centralized entry point for managing, routing, and securing
API traffic.
Features:
• Traffic management
• API composition
• Rate limiting and throttling
• Request and response transformation
• Analytics and monitoring
• Security enforcement

6. AZURE API MANAGEMENT 6
AZURE API MANAGEMENT
Azure API Management (APIM) is a fully managed service that enables organizations to publish,
secure, transform, maintain, and monitor APIs.
Features:
• API Gateway: Securely expose services residing within Azure, other clouds, or on-premises.
• Developer Portal: Automatically generated, fully customizable website for API
documentation and developer onboarding.
• Analytics: Gain insights into API usage and performance.
• Policies: Implement rules for authentication, authorization, transformation, and caching.
• Integration: Seamless integration with Azure services, including Azure Functions, Logic
Apps, and Azure DevOps.

7. AWS API GATEWAY 7
AWS API GATEWAY
AWS API Gateway is a managed service that allows developers to create, publish, maintain,
monitor, and secure APIs at any scale.
Features:
• Support for RESTful APIs and WebSocket APIs.
• Integration with AWS Lambda for serverless architecture.
• Traffic management: Throttling, burst limits, and quotas.
• Security: Authentication and authorization via AWS Identity and Access Management (IAM),
Amazon Cognito, and Lambda authorizers.
• Monitoring: Built-in Amazon CloudWatch integration for metrics and logging.
• Caching: Response caching to improve performance.

8. API SECURITY
Introduction

9. INTRODUCTION
 API security refers to the practices and strategies employed to protect
Application Programming Interfaces (APIs) from unauthorized access,
exploitation, and other forms of malicious attacks.
 It ensures the integrity, confidentiality, and availability of data and
services communicated through APIs.
 This includes measures to authenticate and authorize users, validate
inputs, encrypt data, and monitor API usage to detect and respond to
potential threats.
 Effective API security safeguards the interfaces that connect different
software applications, systems, and services, thereby preventing data
breaches, service disruptions, and other security incidents.
INTRODUCTION 9

10. REQUEST-BASED SECURITY 10
REQUEST-BASED SECURITY
Request-based security focuses on securing the individual requests made to APIs. This approach
ensures that each API request is authenticated and authorized before processing.
Components:
• Authentication: Verifying the identity of the client making the request.
• Authorization: Determining if the authenticated client has permission to access the
requested resource.
• Data Encryption: Encrypting request and response payloads to protect data in transit.
• Rate Limiting and Throttling: Limiting the number of requests a client can make to prevent
abuse and ensure fair usage.

11. AUTHENTICATION AND AUTHORIZATION 11
AUTHENTICATION AND AUTHORIZATION
• Authentication
• Authorization

12. AUTHENTICATION 12
AUTHENTICATION
Definition: The process of verifying the identity of a user or system.
Methods:
• Basic Authentication: Involves sending a username and password with each API request.
Simple but not recommended due to security risks.
• Token-Based Authentication: Using tokens such as JSON Web Tokens (JWT) or OAuth tokens
to authenticate requests. Tokens are generated upon successful login and used for
subsequent requests.
• API Keys: Simple tokens that identify the calling project, useful for identifying the source of
traffic.

13. AUTHORIZATION 13
AUTHORIZATION
Definition: The process of determining if an authenticated user or system has permission to
access a specific resource or perform a specific action.
Methods:
• Role-Based Access Control (RBAC): Permissions are assigned to roles, and users are
assigned to these roles, simplifying management.
• Attribute-Based Access Control (ABAC): Access decisions are based on attributes such as
user role, resource type, and environment.
• Policy-Based Access Control (PBAC): Uses policies to define and enforce access rules.

14. CONCLUSION
•API Gateways:
• Essential for managing and securing API traffic in public
clouds.
• Azure API Management and AWS API Gateway offer robust
features for API lifecycle management, security, and
integration.
•API Security:
• Crucial for protecting APIs and ensuring secure
communication.
• Effective security involves both request-based security and
comprehensive authentication and authorization
methods.
•Key Takeaways:
• Implementing API gateways improves API performance,
scalability, and security.
• Adopting strong authentication and authorization
practices is vital for safeguarding API access and data.
CONCLUSION 14

15. THANK YOU
Prince J
(2313213037012)
PRESENTATION TITLE 15