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Alec Dutcher
Alec Dutcher

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Section 3.3 - AWS Certified Cloud Practitioner Study Guide

This series is intended to be a personal study guide. Information may not be comprehensive or accurate. I am sharing it in case others find it useful. Please feel free to comment if any information is inaccurate.

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3.3 Identify the core AWS services

Describe the categories of services on AWS

  • Compute - instances, containers, serverless computing
  • Storage- scalable, reliable, secure, fast-access
  • Network - VPCs, connections to other cloud resources and the internet
  • Database - managed database services cover a wide range of database types and use cases

Identify AWS compute services

  • Recognize there are different compute families
    • Each instance type offers different compute, memory, and storage capabilities, and is grouped in an instance family based on these capabilities
  • Recognize the different services that provide compute
    • Lambda
      • Run code without provisioning infrastructure
      • Respond to code execution requests
      • Pay per millisecond
    • Elastic Container Service (ECS)
      • Fully managed container orchestration service
      • Launch containers with preferred CI/CD and automation tools
    • EC2
      • Offers complete control over compute resources with choice of processor, storage, networking, operating system, and purchase model
  • Recognize that elasticity is achieved through auto-scaling
    • Compute services automatically adjust to meet workload demands
  • Identify the purpose of load balancers
    • Distribute network traffic to improve application scalability

Identify the different AWS storage services

  • Describe S3
    • Object storage with eleven 9s of durability (99.999999999%)
    • Multiple storage classes to reduce cost
      • Standard
      • Intelligent Tiering - optimizes storage costs by monitoring access patterns
      • Standard Infrequent Access - data accessed less frequently but needed quickly
      • One Zone Infrequent Access - similar to standard, but for workloads that don’t require availability
      • Glacier - archive storage
      • Glacier Deep Archive - long-term archive storage
    • Data stored in Buckets
    • Charges for storage and for retrieval
  • Describe S3 Glacier
    • S3 storage class designed for archive storage
    • Data transfer takes minutes to hours
    • Glacier Deep Archive is lowest-cost storage class
  • Describe Elastic Block Store (EBS)
    • Block storage service designed for EC2
    • Multiple volume types to optimize performance and cost
    • SSD for transactional workloads
    • HDD for throughput intensive workloads
  • Describe Snowball
    • Edge computing, data migration, and edge storage device
    • Storage Optimized - block and object storage suitable for local storage and data transfer
    • Compute Optimized - more CPUs and an optional GPU for added compute
  • Describe Elastic File System (EFS)
    • File system that automatically grows and shrinks as files are added and removed
    • Provisioning and maintenance are not required
    • Share file data between applications
  • Describe Storage Gateway
    • Hybrid cloud services that connect on-prem applications with cloud storage
    • Move backups to the cloud, cache data locally for low-latency

Identify AWS networking services

  • Identify VPC - isolate cloud resources by building a virtual network environment
  • Identify security groups - virtual firewall for instance in a VPC
  • Identify the purpose of Route 53 - DNS service for routing users to applications
  • Identify VPN, Direct Connect
    • VPN - build a cloud-based VPN on the Amazon network
    • Direct Connect - bypass public internet and connect to AWS resources directly through the AWS network

Identify different AWS database services

  • Install databases on EC2 compared to managed databases
  • Identify RDS
    • Relational Database Service
    • Managed relational database service
    • Multiple database engines available (Amazon Aurora, PostgreSQL, MySQL, MariaDB, Oracle Database, and SQL Server)
  • Identify DynamoDB
    • NoSQL key-value database
    • Single-digit millisecond performance and near infinite throughput
    • Easily integrates with other AWS services
  • Identify Redshift
    • Data warehouse
    • Connect to data storage and to analytics tools
    • Uses SQL to analyze structured and semi-structured data across multiple sources

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