Serverless

• Serverless computing is a cloud computing execution model where the cloud provider dynamically allocates the machine resources needed to run code.
• Serverless APIs are a specific type of serverless application that expose functionalities through API endpoints.

Benefits of Serverless APIs

• Scalability: Automatically scales based on incoming traffic.
• Cost-efficiency: Pay only for the compute time used.
• Developer productivity: Focus on writing code, not managing infrastructure.
• Increased agility: Deploy and update applications quickly.

Containers and their role in Serverless

• Containers are lightweight, standalone, executable packages of software that include everything needed to run an application: code, runtime, system tools, system libraries, settings.
• In serverless: Containers can be used to package and deploy Lambda functions, providing more control over the runtime environment and enabling the reuse of existing container images.

AWS Lambda and its capabilities

• AWS Lambda is a serverless compute service that lets you run code without provisioning or managing servers.

Key features:
○ Pay-per-use pricing
○ Automatic scaling
○ Integration with other AWS services
○ Support for multiple programming languages
○ High concurrency

AWS CDK: Overview and benefits

• AWS Cloud Development Kit (CDK) is a software development framework for defining cloud infrastructure in code.

Benefits:
○ Infrastructure as Code (IaC) approach
○ Increased development speed
○ Improved consistency and reliability
○ Integration with popular programming languages ( C#, Java, Python, TypeScript)

Understanding Serverless APIs

• API Gateway: Basics and integration with Lambda: API Gateway is a fully managed service that acts as a front door for applications to access and use cloud-based APIs. It integrates seamlessly with AWS Lambda to create serverless APIs.

• Designing Serverless APIs: Best practices: Focuses on creating efficient, scalable, and secure serverless APIs by following design principles and architectural patterns.

• Event-driven architectures and serverless APIs: Explores how serverless APIs can be built around event-driven principles, reacting to events and triggering functions accordingly.

• API versioning and management: Discusses strategies for managing API changes over time, ensuring compatibility, and providing support for different API versions.

AWS Lambda

• Lambda execution environments: Understands the different runtime environments available for Lambda functions.
• Lambda triggers: Explores various ways to invoke Lambda functions, including API Gateway, S3, DynamoDB, and more.
• Lambda function authoring: Covers coding Lambda functions using supported languages like C#, Java, Python, and Node.js.
• Lambda performance optimization: Focuses on techniques to improve function execution speed and cost-efficiency.
• Lambda best practices: Provides guidelines for building reliable, scalable, and secure Lambda functions.