Engineering & Life

Jayanth's Blog

Thoughts on AWS, Terraform, Kubernetes, platform engineering, and the quieter things in life.

143Posts

19Topics

1223Min of reading

Aug 23, 2026Latest

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143 posts

GCP Architecture SeriesAug 23, 2026

GCP Architecture Series #10 — Premium and Standard Network Tiers: Where Traffic Leaves Google's Backbone

A platform team is asked to bring the egress bill down. They find Network Service Tiers, read that Standard Tier is cheaper than Premium Tier, and switch a regi…

Azure Architecture SeriesAug 23, 2026

Azure Architecture Series #10 — Billing Profiles and Invoice Sections: Where the Org Chart Starts Costing Money

Finance asks a reasonable question: can each department get its own invoice? The platform team opens Cost Management + Billing, finds that a Microsoft Customer…

AWS Architecture SeriesAug 23, 2026

AWS Architecture Series #30 — Glue Catalog and Schema Drift: A Table Has Four Schemas

Every account of schema drift starts in the same place: an upstream team added a field, or renamed one, or changed an integer to a string, and now the das…

Azure Weekly LabAug 22, 2026

Week 1 — The Policy Was Perfect and It Governed Nothing

Azure gives you three nested scopes: management groups, subscriptions and resource groups. Almost every landing zone that goes wrong goes wrong because somebody…

AWS Weekly IntelligenceAug 22, 2026

AWS Weekly Intelligence #3 - 17-21 August 2026

22 August 2026 · Everything AWS shipped, 17–21 August

GCP Weekly IntelligenceAug 22, 2026

GCP Weekly Intelligence #2 - 17-21 August 2026

A week with more structural change in it than the note count suggests. Google announced that from November it will start applying project liens on your behalf w…

GCP Architecture SeriesAug 22, 2026

GCP Architecture Series #9 — Dual-Region and Multi-Region: Choosing How Stale the Surviving Copy May Be

A team creates a bucket for a reporting pipeline. The location dropdown offers a region, a dual-region and a multi-region; multi-region sounds the most robust,…

Azure Weekly IntelligenceAug 22, 2026

Azure Weekly Intelligence #2 - 17-21 August 2026

Fourteen announcements across five days and no new services among them. What arrived divides cleanly into three groups: cost levers for people running licensed…

AWS Daily IntelligenceAug 22, 2026

AWS Daily Intelligence #16 - Glue 6.0 Is Cheaper, and Its Headline Feature Makes Tables Athena Cannot Read

AWS Glue 6.0 is generally available with lower pricing than previous Glue versions andApache Iceberg v3support, described by AWS as the most complete v3 impleme…

AWS Architecture SeriesAug 22, 2026

AWS Architecture Series #29 — Strangler Fig: The Routing Layer Is the Migration

The strangler fig is the least controversial pattern in migration work. Put a routing layer in front of the old system, build each new capability behind i…

Azure Architecture SeriesAug 22, 2026

Azure Architecture Series #9 — Subscription Types: How the Agreement You Signed Shapes the Estate You Can Build

A platform team designs the landing zone properly. Subscription per team per environment, management groups by governance posture, the whole shape from#1. Then…

GCP Weekly LabAug 21, 2026

Week 1 — A GCP Landing Zone, and Why It Is Not Two Accounts

In AWS I run two accounts. One is governance — Organizations, SCPs, Identity Center, the audit trail. The other runs workloads. That split is the backbone of ev…

AWS Weekly LabAug 21, 2026

Week 15 - CloudTrail Organization Trail + Audit Forensics: Nobody Could Tell Me Who Deleted It

During Week 12 of this series, the account’s AWS Config recorder was deleted in the middle of a build. Not by me, and not by anything in that week’s Terraform —…

GCP Architecture SeriesAug 21, 2026

GCP Architecture Series #8 — Global, Regional, Zonal: The Property That Decides Every Later Design

A team is asked to make an application multi-region. It runs happily in one zone of one region, and the plan they write is the one their instincts hand them: st…

AWS Daily IntelligenceAug 21, 2026

AWS Daily Intelligence #15 - Network Firewall Counts Rule Hits, and Why Zero Does Not Mean Unused

21 August 2026 · AWS Network Firewall

AWS Architecture SeriesAug 21, 2026

AWS Architecture Series #28 — When the Network Is the Bottleneck, You Now Drive to AWS

Every large migration eventually runs the same sum. Petabytes on one side, a link measured in gigabits on the other, and a number of days that does not fi…

Azure Architecture SeriesAug 21, 2026

Azure Architecture Series #8 — Paired Regions: What Pairing Promises, and What It Very Clearly Does Not

A disaster recovery plan contains a sentence that has survived three annual reviews: "In the event of a regional outage, services fail over to the paired region…

GCP Architecture SeriesAug 20, 2026

GCP Architecture Series #7 — Liens: The Brake With Somebody Else's Hand On It

A platform team is decommissioning a retired environment. The Terraform run fails on the last step: the project will not delete. The error names a lien.

AWS Daily IntelligenceAug 20, 2026

AWS Daily Intelligence #14 - Twenty Managed Policies Per Role, and the Three Limits That Did Not Move

20 August 2026 · AWS Identity and Access Management

AWS Architecture SeriesAug 20, 2026

AWS Architecture Series #27 — DataSync and Transfer Family: Who Starts the Transfer

Two services, one sentence of requirement. "We need to move files into S3" is answered by AWS DataSync and by AWS Transfer Family, and the comparison tabl…

Azure Architecture SeriesAug 20, 2026

Azure Architecture Series #7 — Availability Zones: What a Zone Is, and What Zone-Redundant Actually Promises

An auditor asks a simple question: if one availability zone in your region fails, does this service keep running? The team checks that the region supports zones…

GCP Architecture SeriesAug 19, 2026

GCP Architecture Series #6 — Deleting a Project: The Undo Button That Only Half Works

A platform team is retiring an old data pipeline. The project is clearly dead — no deployments in eight months, no traffic — and somebody has read that deletion…

AWS Daily IntelligenceAug 19, 2026

AWS Daily Intelligence #13 - Policy Autopilot Reads Your Terraform Plan, Not Your Runtime

19 August 2026 · AWS Identity and Access Management

AWS Architecture SeriesAug 19, 2026

AWS Architecture Series #26 — Mainframe Modernisation After Both Doors Closed

Mainframe modernisation is the longest, most expensive and least reversible programme most organisations will run. It is also the one where the reference…

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