https://www.puglieseweb.com/blog Practical writing on software architecture, AWS, DevOps and AI-assisted engineering from PuglieseWeb LTD. en-gb https://www.puglieseweb.com/blog/traditional-sdlc-vs-ai-native-development-lifecycle https://www.puglieseweb.com/blog/traditional-sdlc-vs-ai-native-development-lifecycle The software development lifecycle is being rewritten. Requirements, design, and build no longer happen in sequence — they evolve together, driven by AI agents. Here is how the AI-DLC differs from traditional SDLC, and how SystemDox fills the gap. Sat, 04 Jul 2026 08:00:00 GMT Emanuele Pugliese ai architecture devops https://www.puglieseweb.com/blog/state-of-the-art-multi-tenant-api-authorizer https://www.puglieseweb.com/blog/state-of-the-art-multi-tenant-api-authorizer How to build a stateless, cache-safe multi-tenant API authorizer using Cognito Pre Token Generation v2 — eliminating per-request database lookups and fixing tenant-scoped caching. Sun, 28 Jun 2026 14:00:00 GMT Emanuele Pugliese architecture aws https://www.puglieseweb.com/blog/rfc-7807-problem-details-structured-api-errors https://www.puglieseweb.com/blog/rfc-7807-problem-details-structured-api-errors How application/problem+json gives API clients predictable, machine-readable error responses — and why it belongs in your Lambda handlers, not API Gateway. Sun, 28 Jun 2026 10:00:00 GMT Emanuele Pugliese architecture aws https://www.puglieseweb.com/blog/github-hosted-websites-how-it-works https://www.puglieseweb.com/blog/github-hosted-websites-how-it-works A complete guide to how PuglieseWeb builds websites that live in your GitHub repository. Edit with SystemDox, auto-publish via GitHub Pages — zero hosting costs, full revision history, no vendor lock-in. Sat, 27 Jun 2026 10:00:00 GMT Emanuele Pugliese architecture ai https://www.puglieseweb.com/blog/ad-hoc-sql-client-debugging-athena https://www.puglieseweb.com/blog/ad-hoc-sql-client-debugging-athena Predefined dashboards answer yesterday's questions. Ad-hoc SQL on your event lake answers tomorrow's. Here's how to use Athena for exploratory analysis, user timeline reconstruction, and deep client debugging — without blowing your AWS bill. Thu, 25 Jun 2026 10:00:00 GMT Emanuele Pugliese architecture aws data https://www.puglieseweb.com/blog/data-lineage-vs-business-flow-analytics-what-small-teams-actually-need https://www.puglieseweb.com/blog/data-lineage-vs-business-flow-analytics-what-small-teams-actually-need Enterprise data governance tools promise visibility into your data. But most small teams need to understand user behaviour, not Parquet file provenance. Here's how to tell the difference — and build what matters first. Thu, 25 Jun 2026 10:00:00 GMT Emanuele Pugliese architecture aws data https://www.puglieseweb.com/blog/european-digital-sovereignty-careers-investments https://www.puglieseweb.com/blog/european-digital-sovereignty-careers-investments How Europeans can build careers and investment portfolios around the continent's accelerating shift away from US Big Tech toward open-source and European-controlled alternatives. Wed, 17 Jun 2026 19:30:00 GMT Emanuele Pugliese modernisation compliance https://www.puglieseweb.com/blog/building-data-products-from-event-schemas-aws https://www.puglieseweb.com/blog/building-data-products-from-event-schemas-aws Build governed, discoverable data products by publishing CloudEvents-compliant business events through EventBridge to an S3 data lake — without coupling analytics to your operational database. Wed, 17 Jun 2026 08:00:00 GMT Emanuele Pugliese architecture aws https://www.puglieseweb.com/blog/ema-admin-assistant-manage-your-website-by-talking-to-it https://www.puglieseweb.com/blog/ema-admin-assistant-manage-your-website-by-talking-to-it How we built Ema Admin Assistant — an AI chatbot that lets business owners update their website content through conversation. No CMS forms, no waiting for developers. Tue, 16 Jun 2026 14:00:00 GMT Emanuele Pugliese ai product https://www.puglieseweb.com/blog/understanding-three-layers-modern-ai-systems https://www.puglieseweb.com/blog/understanding-three-layers-modern-ai-systems A clear breakdown of how foundation models, skills, and retrieval-augmented generation work together to power modern AI applications. Tue, 16 Jun 2026 14:00:00 GMT Emanuele Pugliese ai architecture https://www.puglieseweb.com/blog/embedding-models-the-translation-layer-between-human-language-and-machine-search https://www.puglieseweb.com/blog/embedding-models-the-translation-layer-between-human-language-and-machine-search How embedding models turn words into numbers that machines can compare, why that matters for search and AI, and what to consider when choosing one. Tue, 16 Jun 2026 12:00:00 GMT Emanuele Pugliese ai architecture https://www.puglieseweb.com/blog/rag-and-vector-databases-what-actually-happens-when-ai-answers-your-question https://www.puglieseweb.com/blog/rag-and-vector-databases-what-actually-happens-when-ai-answers-your-question A practical explanation of how retrieval-augmented generation works, why vector databases matter, and when you should (and shouldn't) reach for them. Tue, 16 Jun 2026 10:00:00 GMT Emanuele Pugliese ai architecture https://www.puglieseweb.com/blog/ai-agents-orchestrator-specialist-architecture https://www.puglieseweb.com/blog/ai-agents-orchestrator-specialist-architecture A practical guide to designing scalable, accurate, and maintainable AI agent systems using the Orchestrator-Specialist pattern for complex, multi-step task automation. Tue, 16 Jun 2026 08:00:00 GMT Emanuele Pugliese ai architecture https://www.puglieseweb.com/blog/lambda-lessons-from-production-the-bugs-nobody-warns-you-about https://www.puglieseweb.com/blog/lambda-lessons-from-production-the-bugs-nobody-warns-you-about Hard-won lessons from deploying AWS Lambda in production — layer path mistakes, silent auth failures, cold start surprises, and the IAM traps that cost hours to debug. Tue, 16 Jun 2026 08:00:00 GMT Emanuele Pugliese architecture aws https://www.puglieseweb.com/blog/european-alternatives-ai-powered-apps-2026 https://www.puglieseweb.com/blog/european-alternatives-ai-powered-apps-2026 A practical guide to the European software stack for building modern AI-powered applications — covering LLM inference, vector search, serverless compute, and storage alternatives that offer better data sovereignty, lower costs, and easier EU compliance. Mon, 15 Jun 2026 10:00:00 GMT Emanuele Pugliese ai architecture https://www.puglieseweb.com/blog/multi-tenancy-decision-you-cant-take-back https://www.puglieseweb.com/blog/multi-tenancy-decision-you-cant-take-back Why tenancy is the one architectural choice that's genuinely painful to reverse — and the practical path from agency project to multi-tenant product. Mon, 15 Jun 2026 08:00:00 GMT Emanuele Pugliese architecture https://www.puglieseweb.com/blog/ai-assisted-development-workflow-claude-code-2026 https://www.puglieseweb.com/blog/ai-assisted-development-workflow-claude-code-2026 A practical, step-by-step walkthrough of how I use Claude Code to ship features faster — from identifying problems to planning epics, implementing, and testing. Includes 2026 best practices for AI-assisted development. Mon, 15 Jun 2026 06:30:00 GMT Emanuele Pugliese ai devops https://www.puglieseweb.com/blog/ai-powered-service-website-tech-stack-2026 https://www.puglieseweb.com/blog/ai-powered-service-website-tech-stack-2026 A practical, battle-tested tech stack for building a modern website with AI chatbot, RAG, booking system, feedback, and admin dashboard. Built for speed, maintainability, and real-world costs in 2026. Sun, 14 Jun 2026 20:15:00 GMT Emanuele Pugliese ai architecture https://www.puglieseweb.com/blog/living-adrs-architecture-decisions https://www.puglieseweb.com/blog/living-adrs-architecture-decisions Architecture Decision Records only work if they stay current. Learn how to make ADRs a living part of your development workflow — not another stale wiki page. Mon, 01 Jun 2026 21:45:00 GMT Emanuele Pugliese architecture devops https://www.puglieseweb.com/blog/architecture-guardrails-automating-compliance https://www.puglieseweb.com/blog/architecture-guardrails-automating-compliance Stop relying on manual code reviews to catch architecture violations. Learn how to automate guardrails with fitness tests that run on every pull request. Thu, 28 May 2026 19:30:00 GMT Emanuele Pugliese architecture devops compliance https://www.puglieseweb.com/blog/event-driven-architecture-aws-patterns https://www.puglieseweb.com/blog/event-driven-architecture-aws-patterns Practical event-driven architecture patterns using SQS, SNS, EventBridge, and DynamoDB Streams — with real-world trade-offs and when to use each. Fri, 15 May 2026 05:45:00 GMT Emanuele Pugliese architecture aws https://www.puglieseweb.com/blog/state-of-documentation-2025 https://www.puglieseweb.com/blog/state-of-documentation-2025 Key insights from 444 documentation experts — technical writers, product managers, engineers, and leaders — on how teams build, measure, and evolve their documentation. Industry report sourced from GitBook. Wed, 01 Jan 2025 00:00:00 GMT Emanuele Pugliese architecture ai