AWS Cloud Practitioner (CLF-C02) - Core Services

1. Trade capital expense (CapEx) for variable expense (OpEx).
2. Benefit from massive economies of scale.
3. Stop guessing capacity.
4. Increase speed and agility.
5. Stop spending money running and maintaining data centers.
6. Go global in minutes.

Customers are responsible for security IN the cloud. This includes customer data, IAM access management, OS/application configuration, network firewall rules (Security Groups), and encrypting data at rest and in transit.

AWS is responsible for security OF the cloud. This includes physical security of data centers, hardware infrastructure, software host OS, virtualization layer, and core networking infrastructure.

Security practice of granting users or systems only the minimum permissions necessary to perform their job tasks using JSON policy documents with specific Effect, Action, and Resource elements.

Pay for compute capacity by the second or hour with no long-term commitment or upfront payment. Best for short-term, unpredictable workloads that cannot be interrupted.

Provides a significant discount (up to 72%) compared to On-Demand in exchange for a 1-year or 3-year term commitment. Best for steady-state workloads.

Purchase unused EC2 capacity at up to 90% discount. AWS can reclaim capacity with a 2-minute warning. Ideal for fault-tolerant, stateless, or batch processing workloads.