Fastly

1. Core concepts

   Services, domains, backends, versions and how the Fastly edge works.

2. Full-site delivery (CDN)

   Setting up CDN delivery for a website.

3. Caching best practices

   Cache control, TTLs, surrogate keys, purging and shielding.

4. VCL

   Varnish Configuration Language subroutines, custom VCL and best practices.

5. VCL reference

   Variables, functions and subroutines.

6. Compute

   Serverless edge compute in JavaScript, Rust and Go on WebAssembly.

7. Compute versus VCL

   How Compute compares to VCL-based services.

8. Next-Gen WAF

   Web application firewall protection and rules.

9. DDoS protection

   Platform and add-on DDoS mitigation.

10. TLS and securing domains

    Configuring HTTPS and certificates for domains.

11. Observability

    Stats, alerts and custom dashboards.

12. Real-time log streaming

    Streaming logs to third-party endpoints.

13. Fastly API

    REST API reference and API tokens.

14. Image Optimizer

    On-the-fly image transformations.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.