AWS Certified Cloud Practitioner Study Guide by Ben Piper & David Clinton

Author:Ben Piper & David Clinton
Language: eng
Format: epub
ISBN: 9781119490715
Publisher: Wiley
Published: 2018-05-30T17:00:00+00:00

Summary

Configuring EC2 instances is designed to mirror the process of provisioning and launching on-premises servers. Instances are defined by your choice of AMIs, instance type, storage volumes, and pricing model.

AMIs are organized into four categories: Quick Start, custom (My AMIs), AWS Marketplace, and Community. You can create your own AMI from a snapshot based on the EBS volume of an EC2 instance.

EC2 instance types are designed to fit specific application demands, and individual optimizations are generally available in varying sizes.

EBS storage volumes can be encrypted and are more like physical hard drives in the flexibility of their usage. Instance store volumes are located on the same physical server hosting your instance and will, therefore, deliver faster performance.

EC2 on-demand pricing is best for short-term workloads that can’t be interrupted. Longer-term workloads—like ecommerce websites—will often be much less expensive when purchased as reserved instances. Spot instances work well for compute-intensive data operations that can survive unexpected shutdowns.

Lightsail, Elastic Beanstalk, Elastic Container Service, Elastic Container Service for Kubernetes, and Lambda are all designed to provide abstracted compute services that simplify, automate, and reduce the cost of compute operations.

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