Where I moved the needle most.

Four out of many. These are the ones that made a measurable difference.

1. 01

   Travel and digital content

   $500 → $120 a month, and the whole migration in eight working days.

   From managed cloud to two self-hosted servers

   A platform selling travel, tickets and digital books was paying $500 to $600 a month on low traffic. It moved to two self-hosted servers with the database replicated: if one goes down, traffic moves to the other.

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2. 02

   Pharmaceutical

   Migrated to AWS against a deadline, and modernized afterwards without the rush.

   From a VPS to AWS in two steps: migrate first, modernize after

   A Laravel application ran on a VPS with its database and Redis on the same machine. It was first migrated to AWS as it was, to meet the date; then it moved to containers, with the database, the cache and the files off the server.

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3. 03

   Pharmaceutical · internal event

   3,000 concurrent users on a platform that lived thirty days.

   Infrastructure for an event that happens once

   A pharmaceutical company's year-end event: each person uploaded a photo and the others voted. The peak was announced and would not happen twice. The infrastructure was written entirely as code in three days and taken down when it ended.

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4. 04

   Software factory

   Fifty inactive accounts removed, and a spending cap where there had been none.

   An AWS account nobody was governing

   The account had grown with no owner: old buckets holding hundreds of gigabytes, stopped instances still billing, and inactive users with more permissions than they needed. Access and spend were the same problem.

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