Software systems integration fundamentals: strategies, patterns, and trade-offs for connecting systems that need to work together.

Amdahl’s Law sets the speed limit for parallelism. Learn why doubling cores doesn’t double speed, how the serial fraction dominates, and when to optimize differently.

Magic links, OAuth churn, absurd password rules, and CAPTCHA theater waste human time. Passkeys and WebAuthn may be the missing magic link.

Why JavaScript works the way it does: dynamic typing, prototypes, closures, and the event loop. Concepts behind the design and when it fits.

Why Rust exists: memory safety without garbage collection, ownership, and fearless concurrency. Learn the concepts behind Rust’s design and when it fits.

Why FinOps exists and how it works: visibility, accountability, and the Inform-Optimize-Operate lifecycle. Learn the concepts behind cloud financial operations.

Why Azure works the way it does: regions, Entra ID, resource groups, and core services. Learn the concepts that shape Microsoft cloud decisions.

Why AWS works the way it does: regions, IAM, shared responsibility, and core services. Learn the concepts that shape cloud decisions.

AI has overturned old assumptions about writing, thinking, coding, art, buying software, and needing experts. Here are some things that are no longer true.

How to install, update, remove, and search packages with the APT package manager on Debian and Ubuntu.