Topics¶

The topic index. The four pillars (Learn / Build / Certify / Reference) are organized by purpose. This index is organized by subject.

If you want everything this site has on a given subject - the plain-English explainer, the cross-cloud comparisons, the hands-on builds, the cert notes that go deepest - start here.

Browse by topic¶

• Databases - SQL, NoSQL, vector DBs, data warehouses, lakehouses, choosing per workload
• Data engineering - pipelines, ETL/ELT, batch vs streaming, modeling, partitioning, quality and lineage

New to the subject? Data from Scratch walks through both topics in order.

Topics on the sibling sites¶

Subjects outside data have their own topic indexes on the other Zero to Hero sites:

• Cloud - networking, serverless, Kubernetes, observability, SRE and reliability, FinOps, platform engineering
• Security - security, identity and IAM
• AI - learn AI, build with AI, AI safety and security

Pattern per topic page¶

Each topic page links across pillars in a consistent shape:

1. One-paragraph summary
2. Learn - concept pages (5-10 min reads)
3. Compare - cross-cloud and AI service comparisons
4. Reference - deep-dive guides (compliance, migration, troubleshooting, networking)
5. Build - hands-on projects
6. Certify - certs that cover this topic, grouped by tier

Use these pages as a starting jumppoint. They're aggregators, not source-of-truth content.

Don't see a topic you want?¶

The topics here cover the densest cross-pillar threads. Other data subjects (streaming or BI on their own, for instance) have material in resources/ and the concept pages but don't yet have a topic index. Contributions welcome - see CONTRIBUTING.md.