AWS SAA (Solutions Architect Associate) Exam Study Note

1. Amazon EC2 (Elastic Compute Cloud)

  • 适配情况：当你需要灵活的虚拟伺服器来运行应用程式或服务时，EC2 是首选解决方案。EC2 提供多种实例类型（如计算优化型、记忆体优化型、GPU 实例等），可根据应用负载进行扩展。
  • 英语说明：EC2 provides scalable computing capacity in the AWS cloud, allowing users to easily launch virtual servers and scale them according to their needs.
  • Reference: EC2 Documentation

2. Amazon S3 (Simple Storage Service)

  • 适配情况：用于存储和档案备份的服务，特别是当需要高持久性和扩展能力时。适用于静态网站託管、大数据分析、备份和恢复。
  • 英语说明：Amazon S3 is a scalable object storage service ideal for storing large amounts of unstructured data, with 99.999999999% durability and lifecycle policies for cost optimization.
  • Reference: S3 Documentation

3. Amazon RDS (Relational Database Service)

  • 适配情况：需要使用传统关联式资料库的应用程式可以使用 RDS，适用于需要高可用性和自动备份的资料库，如 MySQL、PostgreSQL、MariaDB、SQL Server 和 Oracle。
  • 英语说明：RDS simplifies the setup, operation, and scaling of relational databases with automatic backups, software patching, and multi-AZ replication for high availability.
  • Reference: RDS Documentation

4. Amazon DynamoDB

  • 适配情况：适合对于延迟敏感的应用程式，尤其是需要高可扩展性和无缝扩展的 NoSQL 资料库，如游戏资料储存、IoT 资料储存和行动应用程式。
  • 英语说明：DynamoDB is a fully managed NoSQL database that provides fast and predictable performance, and scales automatically to handle large amounts of data and requests.
  • Reference: DynamoDB Documentation

5. Amazon VPC (Virtual Private Cloud)

  • 适配情况：用于设计网路隔离的环境，适合需要高安全性的应用程式，可以透过设定私有子网、VPN、NAT Gateways 和防火墙规则来保护应用程式。
  • 英语说明：Amazon VPC allows you to launch AWS resources into a virtual network that you\'ve defined, providing full control over your networking environment.
  • Reference: VPC Documentation

6. Amazon CloudFront

  • 适配情况：当需要分发静态和动态内容，并降低延迟时，CloudFront 是一个理想的选择，尤其是全球使用者分布广泛的应用程式。
  • 英语说明：CloudFront is a content delivery network (CDN) that speeds up the distribution of your static and dynamic web content, reducing latency and improving user experience.
  • Reference: CloudFront Documentation

7. Elastic Load Balancing (ELB)

  • 适配情况：适合需要将流量分散到多个实例的应用程式，帮助提升应用程式的可用性和扩展性。
  • 英语说明：ELB automatically distributes incoming application traffic across multiple EC2 instances to ensure high availability and fault tolerance.
  • Reference: ELB Documentation

8. Amazon SQS (Simple Queue Service)

  • 适配情况：适用于需要在分布式系统中处理任务队列的应用程式，确保消息的可靠传送，并能有效解耦系统元件。
  • 英语说明：SQS is a fully managed message queuing service that enables decoupling and scalability of microservices, ensuring reliable communication between components.
  • Reference: SQS Documentation

9. AWS Lambda

  • 适配情况：适合无伺服器计算模型的应用程式，当不想管理伺服器且希望根据实际需求执行代码时，可以选择Lambda。适用于事件驱动的架构，如文件处理、监控或 API。
  • 英语说明：AWS Lambda allows you to run code without provisioning or managing servers, scaling automatically in response to the number of requests.
  • Reference: Lambda Documentation

10. Amazon EBS (Elastic Block Store)

  • 适配情况：适合需要持久性储存的 EC2 实例，提供高 I/O 性能以及快照备份功能，适用于数据库应用程式或大型资料储存需求。
  • 英语说明：EBS provides persistent block storage volumes for EC2 instances, optimized for transactional workloads such as databases and file systems.
  • Reference: EBS Documentation

11. Amazon CloudWatch

  • 适配情况：适合监控 AWS 资源和应用程式，帮助开发者自动触发警报和执行响应行动，适用于即时监控系统健康状态。
  • 英语说明：CloudWatch provides monitoring and observability for AWS resources and applications, collecting metrics, logs, and events to enable real-time insights and automated actions.
  • Reference: CloudWatch Documentation

12. AWS IAM (Identity and Access Management)

  • 适配情况：适合需要精细化权限控制的应用程式，允许设定角色、使用者、群组和策略来确保安全性。
  • 英语说明：IAM allows you to securely control access to AWS services and resources for users and applications by defining fine-grained permission policies.
  • Reference: IAM Documentation

13. Amazon Route 53

  • 适配情况：当需要管理域名并启用 DNS 服务来路由流量时，Route 53 是理想选择，并提供高可用性和故障转移功能。
  • 英语说明：Route 53 is a scalable DNS and domain name management service that routes end-user traffic to AWS services and external resources while ensuring high availability through DNS failover.
  • Reference: Route 53 Documentation

14. Amazon Aurora

  • 适配情况：适合需要高性能的关联式资料库的应用程式，提供比传统RDS更高的吞吐量和低延迟。
  • 英语说明：Aurora is a MySQL and PostgreSQL-compatible relational database designed for the cloud, offering up to 5x the performance of standard MySQL or 3x PostgreSQL databases.
  • Reference: Aurora Documentation

15. AWS Auto Scaling

  • 适配情况：适合需要自动扩展或缩减 EC2 实例的应用程式，根据需求负载自动调整资源配置。
  • 英语说明：Auto Scaling helps ensure that you have the right amount of EC2 instances running to handle the load for your applications, automatically adjusting based on traffic patterns.
  • Reference: Auto Scaling Documentation

16. AWS KMS (Key Management Service)

  • 适配情况：适合需要加密和解密资料的应用程式，并能管理和控制加密金钥，适用于符合安全合规性要求的应用程式。
  • 英语说明：KMS allows you to create and manage encryption keys to secure your data, providing centralized control over the cryptographic operations within your applications.
  • Reference: KMS Documentation

17. AWS Trusted Advisor

  • 适配情况：适合需要优化 AWS 环境的应用程式，Trusted Advisor 提供安全、性能和成本优化的最佳建议。
  • 英语说明：Trusted Advisor provides real-time guidance to help you optimize your AWS environment across security, cost, performance, and fault tolerance.
  • Reference: AWS Trusted Advisor

18. Amazon SNS (Simple Notification Service)

  • 适配情况：适合需要大规模通知功能的应用程式，例如推送消息、通知使用者或触发事件。
  • 英语说明：SNS is a fully managed messaging service that enables you to send notifications to subscribers or trigger events in response to changes in your environment.
  • Reference: Amazon SNS

19. Amazon EFS (Elastic File System)

  • 适配情况：适合共享档案系统的应用，特别是需要多个 EC2 实例同时存取的资料。
  • 英语说明：EFS provides scalable file storage that can be shared across multiple EC2 instances, offering high availability and durability.
  • Reference: EFS Documentation