A free, self-paced textbook in 7 chapters. Read a chapter, then drill it with the 110 companion flashcards using spaced repetition.
Amazon S3 is the central object store of the AWS platform, advertising eleven nines of durability (99.999999999%) by automatically spreading data across multiple devices and facili...
EC2 instance families are lettered to advertise their shape: C is compute-heavy, M is balanced, R is memory-rich, and T is burstable and cheap for variable workloads. Choosing amon...
Inside a VPC, the choice of how instances reach the internet or AWS services affects both security and cost. A NAT Gateway lets private-subnet resources make outbound calls (for pa...
For relational workloads, Amazon RDS offers managed engines like PostgreSQL, MySQL, and SQL Server. Multi-AZ deployments provide high availability through a synchronous standby in...
Application integration on AWS is a layered set of services. Amazon SQS is a managed message queue offering at-least-once delivery; Standard queues deliver in best-effort order wit...
AWS identity begins with IAM. An IAM user is a long-lived identity for a person or workload, a group attaches shared policies to multiple users, and a role provides temporary crede...
Observability in AWS splits naturally between what happened and how the system is behaving. CloudTrail records the API audit trail: who called which API on which resource. By defau...