Engineering notes from building deployment automation
Practical, opinionated writeups from the team building Vylara. Cloud security, honest infrastructure costs, and the hard problems behind “connect your repo, we figure out the infrastructure.”
AWS Lambda Cold Starts in 2026: The Numbers That Actually Matter
Cold starts cost 100-800ms depending on runtime and memory. Here's the honest 2026 comparison, and when serverless beats a container for your app.
When to Stop Using AWS Managed Services and Self-Manage
Self-managed infrastructure gets cheaper than AWS managed services at scale, but only if you can afford the operational cost. Here's where the line actually falls.
AWS Cost Drift Between Environments: Why Staging Costs More Than It Should
AWS cost drift between staging and production is a config drift problem. Here's why staging quietly costs 60-80% of prod, and how to cut it to under $50/mo.
Serverless vs Managed Containers: A Startup's Real Choice
Serverless suits spiky, event-driven workloads; managed containers win for steady traffic and long-lived services. Here's how to choose for a startup on AWS.
How to Manage AWS Without a DevOps Engineer
A small team can run real AWS infrastructure without a DevOps hire by automating analysis, provisioning, and ops while keeping human approval at every step.
Infrastructure State Collaboration Without a Team Meeting
Safe infrastructure collaboration needs exactly two things: remote state and state locking. Here's how to wire them on AWS for under $0.10/mo — or skip it.
An RDS Backup Strategy for Teams Without a DBA
A practical RDS backup playbook for small teams: pick retention and PITR before launch, then let the Vylara agent provision your database in your own AWS account.
Stop storing customer cloud keys: cross-account IAM with external IDs, end to end
How to authenticate into customer AWS accounts without holding a single long-lived key: assume-role, External IDs, and the defense-in-depth layers around them.
We generate security groups from your code, and they're tighter than the ones you'd write by hand
Hand-written security groups rot the day they're written. Deriving them from your dependency manifests yields tighter rules that regenerate on every deploy.
Multi-tenant Terraform without nightmares: state isolation, lock tables, and disposable runners
How to run Terraform against hundreds of customer AWS accounts unattended: collision-proof state keys, DynamoDB locks, disposable runners, and credential walls.
Ingress topology is a decision, not a default: Caddy vs ALB, and how we let it change later
Why ingress topology should be a revisitable decision: the Caddy-vs-ALB crossover point, a zombie-proxy incident, and the pure reconcile function that fixed it.
AI can write your Terraform. It still shouldn't apply it unsupervised: durable checkpoints for agent-driven infrastructure
Why agent-generated Terraform needs structural human gates: durable LangGraph checkpoints in Postgres, two-track approvals, and unattended deploys done safely.
A secure-by-default AWS network baseline for a typical web app: the exact ruleset
The exact network baseline for a typical web app on AWS: five security groups, two subnet tiers, IAM roles over keys, and what to deliberately skip until later.
Your infra should cost $180/mo until it deserves $680/mo: the honest stages of AWS infrastructure
A line-item comparison of a $180/mo MVP AWS stack and a $680/mo production stack, what each stage legitimately skips, and the concrete triggers for upgrading.
Anatomy of an AWS bill shock: the 5 line items that ambush startups
The five line items that quietly turn a $23 AWS bill into $2,657 — NAT processing, cross-AZ traffic, orphaned resources, log ingestion, egress — and the fix for each.
Your Staging Environment Is Lying to You
How staging drifts from prod — console hotfixes, config divergence, stale data — and the cheapest sequence of fixes that makes staging trustworthy again.
Your Secrets Are in Slack Right Now
Why every small company distributes secrets over Slack, and the one-afternoon exit plan: inventory, a single source of truth, runtime injection, and scoped IAM.