--- title: "Sartaj Ahmad Hajam (@hajamsaj) | Hashnode" description: "Software Engineer. Read the latest articles by Sartaj Ahmad Hajam on Hashnode." url: "https://hashnode.com/@hajamsaj" --- @hajamsaj # Sartaj Ahmad Hajam @hajamsaj · Joined May 2025 Software Engineer ### [Day 9: Mastering Terraform Lifecycle Meta-arguments (AWS)](https://awsterraform30days.hashnode.dev/day-9-mastering-terraform-lifecycle-meta-arguments-aws?utm_source=hashnode&utm_medium=feed) Zero-Downtime Deployments • Resource Protection • Drift Control • Dependency Replacements • Validations 4 min read · [awsterraform30days.hashnode.dev](https://awsterraform30days.hashnode.dev/day-9-mastering-terraform-lifecycle-meta-arguments-aws?utm_source=hashnode&utm_medium=feed) [Dec 6, 2025](https://hashnode.com/posts/day-9-mastering-terraform-lifecycle-meta-arguments-aws/6933f3c0a2debc16bcfd2995) ### [🌟 Day 08 — Mastering Terraform Meta-Arguments (COUNT, FOR\_EACH, DEPENDS\_ON, PROVIDER, For Expressions)](https://awsterraform30days.hashnode.dev/day-08-mastering-terraform-meta-arguments-count-foreach-dependson-provider-for-expressions?utm_source=hashnode&utm_medium=feed) A Complete, practical, and deeply explained guide — with examples and diagrams Welcome to Day 08 of the Terraform AWS Course! This installment focuses on Terraform meta-arguments (the knobs that control how Terraform manages resources) except for lif... 7 min read · [awsterraform30days.hashnode.dev](https://awsterraform30days.hashnode.dev/day-08-mastering-terraform-meta-arguments-count-foreach-dependson-provider-for-expressions?utm_source=hashnode&utm_medium=feed) [Dec 3, 2025](https://hashnode.com/posts/day-08-mastering-terraform-meta-arguments-count-foreach-dependson-provider-for-expressions/6930015d07fb1d5248c3ed71) ### [🚀 Day 7 of #30DaysOfAWSTerraform — Understanding Type Constraints in Terraform](https://awsterraform30days.hashnode.dev/day-7-of-30daysofawsterraform-understanding-type-constraints-in-terraform?utm_source=hashnode&utm_medium=feed) Today’s topic is one of the most important foundations in Terraform — Type Constraints.If you understand how to define, validate, and enforce types for your variables, you will avoid 90% of configuration errors in real Terraform projects. In simple w... 3 min read · [awsterraform30days.hashnode.dev](https://awsterraform30days.hashnode.dev/day-7-of-30daysofawsterraform-understanding-type-constraints-in-terraform?utm_source=hashnode&utm_medium=feed) [Nov 30, 2025](https://hashnode.com/posts/day-7-of-30daysofawsterraform-understanding-type-constraints-in-terraform/692c52413c9aaed0dbb8847f) ### [30 Days of Terraform (AWS) — Days 3–6 (Combined)](https://awsterraform30days.hashnode.dev/30-days-of-terraform-aws-days-36-combined?utm_source=hashnode&utm_medium=feed) I’ve been busy the past few days so I’m combining Days 3–6 into one post. From Day 7 onward I’ll publish a separate post for each day again. Overview (what we cover in this post) Day 3 — AWS Authentication & S3 bucket basics (Terraform + AWS credent... 6 min read · [awsterraform30days.hashnode.dev](https://awsterraform30days.hashnode.dev/30-days-of-terraform-aws-days-36-combined?utm_source=hashnode&utm_medium=feed) [Nov 30, 2025](https://hashnode.com/posts/30-days-of-terraform-aws-days-36-combined/692bff0c5fee9e53080ecf35) ### [🚀 Day 2 of My #30DaysOfAWSTerraform Journey](https://awsterraform30days.hashnode.dev/day-2-of-my-30daysofawsterraform-journey?utm_source=hashnode&utm_medium=feed) Understanding Terraform Providers — The Real Bridge Between Terraform & AWS 3 min read · [awsterraform30days.hashnode.dev](https://awsterraform30days.hashnode.dev/day-2-of-my-30daysofawsterraform-journey?utm_source=hashnode&utm_medium=feed) [Nov 27, 2025](https://hashnode.com/posts/day-2-of-my-30daysofawsterraform-journey/6928767b717d100156de1229)