--- title: "Guides: AI, automation and software" description: "Practical guides: build an AI agent, automate with n8n, get your site indexed by Google, Bpifrance's Diag Data IA, cloud migration and choosing a partner." canonical: https://sdk.enterprises/en/insights language: en --- # Practical guides to decide and act AI, automation, websites and apps, cloud: what we learned on real projects, written for the people who make the decisions, with our sources whenever we quote a figure. - [Migrating hundreds of legacy apps to AWS without stalling](https://sdk.enterprises/en/insights/migrating-hundreds-of-apps-to-aws): A practical method for moving hundreds of legacy VM applications to AWS: inventory, upgrade or rebuild per app, block-split teams, cutover and rollback. - [How to cache high-traffic APIs with Redis and Elasticsearch](https://sdk.enterprises/en/insights/caching-high-traffic-apis): Measure P95 first, then apply cache-aside, sensible TTLs, invalidation and stampede protection with Redis and Elasticsearch. Plus what you should never cache. - [Real-time dashboards with Laravel, Redis and WebSockets](https://sdk.enterprises/en/insights/real-time-dashboards-laravel): How to build real-time dashboards and alerts on high-volume streams with Laravel: buffered ingestion, queues, broadcasting, aggregation and dynamic thresholds. - [Using AI agents safely for code review, tests and deploys](https://sdk.enterprises/en/insights/ai-agents-engineering-workflows): A practical guide to AI agents for engineering chores: choosing tasks, tool boundaries, plan-then-act, logged tool calls, reviewable diffs and evaluation. - [How to upgrade a critical Java 8 application to modern Java](https://sdk.enterprises/en/insights/upgrading-legacy-java): A practical plan to move a critical Java 8 application to a current LTS release: dependency inventory, stepped upgrades, tests, pitfalls and load testing. - [How to secure APIs that handle sensitive or regulated data](https://sdk.enterprises/en/insights/securing-regulated-data-apis): Practical controls for APIs carrying banking, energy or utility data: threat modeling, authorization, least privilege, data minimization, secrets, audit logs. - [Freelancers, agency or partner: how to staff a project](https://sdk.enterprises/en/insights/freelancers-agency-or-partner): Compare freelancers, agencies and engineering partners on accountability, speed, cost, coordination and quality control, plus a checklist to choose a model. - [Questions to ask before hiring a software partner](https://sdk.enterprises/en/insights/choosing-a-software-partner): The questions to ask a software engineering partner before you sign: who does the work, track record, scope, code ownership, security, handover and red flags. - [Questions to ask a cloud migration partner before you sign](https://sdk.enterprises/en/insights/questions-before-hiring-a-cloud-migration-partner): What to ask a cloud migration partner before signing: inventory, strategy per app, landing zone and security, cutover and rollback, costs and handover. - [Modernizing a legacy application: where to start](https://sdk.enterprises/en/insights/modernising-a-legacy-application-where-to-start): Where to start modernizing a legacy application: assess it, stabilize production, build a test safety net, then replace it piece by piece instead of rewriting. - [What a paid software discovery phase should deliver](https://sdk.enterprises/en/insights/what-a-paid-discovery-phase-should-deliver): What a paid discovery phase should produce before you commit to a build: decisions, tested risks, estimate ranges, a first milestone and a clean exit. - [Writing a software project brief that gets comparable quotes](https://sdk.enterprises/en/insights/writing-a-software-project-brief): What to put in a software project brief so partners quote accurately: problem, users, systems, data, budget range, what to leave open, and mistakes to avoid. - [Fixed price or time and materials: choosing a contract model](https://sdk.enterprises/en/insights/fixed-price-or-time-and-materials): When fixed price or time and materials fits a software project, who carries which risk, and hybrids such as capped time and materials or phased fixed price. - [Evaluating an AI agent proof of concept before you scale it](https://sdk.enterprises/en/insights/evaluating-an-ai-agent-proof-of-concept): How to judge an AI agent proof of concept: success criteria, evaluation sets, cost and latency, human review, data and security boundaries, and failure modes. - [How to build an AI agent for your business](https://sdk.enterprises/en/insights/building-an-ai-agent-for-your-business): How to build an AI agent that is useful at work: pick the task, write its rules, connect it to your tools, test it on real cases and keep people in control. - [What is n8n? Definition, uses and limits](https://sdk.enterprises/en/insights/what-is-n8n): n8n is a workflow automation tool that connects your software. What it does, how it works, cloud or self-hosted, pricing model and its limits for a business. - [n8n vs Make vs Zapier: which to choose for an SME?](https://sdk.enterprises/en/insights/n8n-vs-make-vs-zapier): n8n, Make or Zapier: what each tool bills, where your data runs, which one you can host yourself, and how to choose for your business's own workflows. - [How much does an app cost? What drives the price](https://sdk.enterprises/en/insights/how-much-does-an-app-cost): How much does an app cost? Developer day rates from Silkhom's 2025 barometer, App Store and Google Play fees, and what raises or lowers the days of work. - [Website not showing on Google: causes and fixes](https://sdk.enterprises/en/insights/website-not-showing-on-google): Your website does not show up on Google? Check indexing, the noindex tag, robots.txt, your sitemap and redirects. The usual causes, and how to fix each. - [Bpifrance Diag Data IA: eligibility, cost and process](https://sdk.enterprises/en/insights/bpifrance-diag-data-ia): Bpifrance's Diag Data IA: who qualifies, 8 days of an approved expert over 3 months, cost and subsidy, deliverables, and how to prepare for it. - [How to automate supplier invoice processing](https://sdk.enterprises/en/insights/automating-supplier-invoices): How to automate supplier invoices: receipt, AI extraction, checks, matching, approval and posting. And what France's e-invoicing rollout changes.