Blog

Thoughts on AI, software, and life. Short notes and long-form writing.

AWS CLF-C02 Review: Pricing, Support, Marketplace, APN, and Well-Architected

AWS PricingWell-ArchitectedCloud Operations

AWS cost and support concepts are important CLF-C02 topics.

AWSMay 23, 2026

AWS Storage Review: EBS, Instance Store, S3, EFS, FSx, Storage Gateway, and S3 Storage Classes

AWS StorageS3EBS

AWS storage can be grouped by access model: block storage, object storage, and file storage.

DatabaseMay 23, 2026

AWS CLF-C02 Review: Storage Services, S3, EBS, EFS, RDS, DynamoDB, and Caching

AWS DatabaseRDSDynamoDB

AWS storage and database services cover block storage, object storage, file storage, relational databases, NoSQL, and caching.

AWSMay 23, 2026

AWS VPC Networking Review: Subnet, Route Table, IGW, NAT, VPN, Direct Connect, Security Group, and NACL

AWS NetworkingVPCSecurity Group

A VPC is a private network space in AWS. EC2 instances run inside subnets, and subnets belong to a VPC.

Big DataMay 23, 2026

Big Data Review: Hadoop, Spark, and Hive

HadoopSparkHive+1

Big data systems solve a basic problem: data is too large for one machine to store or process efficiently, so storage and computation must be distributed.