In-depth analyses of the decisions that commit an information system — quantified, sourced, dated.
I publish here the analyses I rely on during engagements. Every figure points to its source and every source is dated: on subjects where approximation travels fast, that is the minimum owed to a decision-maker committing a budget.
AI makes legacy remediation affordable — if you know where it pays off and where it costs. A sourced analysis.
Without a map, no batch can be isolated and no debt repaid. What the French cyber agency requires, and what kills a map.
End of support breaks nothing on the day. It turns your estate into attack surface, on a deadline you no longer set.
How ChatGPT picks its sources, what makes a site invisible to it, and which widely quoted figures are worth nothing.
These insights deal with the decisions that commit an information system for years: technical debt, obsolescence, modernisation, architecture trade-offs. They are written for an IT department that has to defend a budget, not for a team looking for a tutorial. Each one targets a specific decision and states what it costs, what it returns, and under what condition.
Every figure quoted points to a primary source I have read — a report, a research publication, an agency document — never to a second-hand summary. Every source is listed at the end of the piece and dated, so you can judge how fresh it is rather than take my word for it.
The second rule is the expensive one: a figure I could not trace back to its original source does not go online, even when it circulates everywhere, and even when it supports my argument. The third is to show the counter-evidence. An analysis that only presents what suits it helps nobody decide, and on these subjects a badly informed decision is paid for over years.
Denis Gosset, enterprise architect and publication director of Meridian Synergy. I work from audit through to delivery, by way of architecture and project direction, either transversally or on one specific domain. The trade-offs described here are ones I hold on production systems, including Waypoint360, a SaaS platform I designed, built and operate.