Guides
In-depth, practical playbooks on custom software, eCommerce, automation, and AI for US businesses. The definitive version of each topic, free to use.
Custom Software for US Businesses: Build vs Buy, Real Costs, and Timelines
A practical, no-hype guide for US small and mid-size businesses deciding whether to build custom software, what it really costs, how long it takes, and how to de-risk the whole thing with a first phase that pays for itself.
Shopify vs WooCommerce for US Businesses: How to Choose in 2026
A straight, no-hype guide for US stores deciding between Shopify and WooCommerce, what each one is genuinely good at, where each quietly costs you later, the real three-year picture, and a simple way to choose that you will not regret.
How to Secure an Admin Panel: Google Auth, 2FA, and Sessions on Vercel
A technical guide to locking down an admin panel when both your client app and admin run on Vercel. Google sign-in with an allowlist, real 2FA, why httpOnly cookies beat tokens in the browser, server-side role checks, security headers, and the mistakes that get admins breached.
Webhooks That Never Lose an Event: A Technical Guide
A technical guide to building webhook integrations that survive the real world. Signature verification, acknowledging fast and processing later, idempotency, retries and ordering, reconciliation for missed events, and dead-letter handling, with code you can lift into a Vercel or Node app.
Replace Zapier With Serverless on Vercel: When and How
A technical guide to moving automations off Zapier and onto serverless functions on Vercel. When no-code is still right, the signs you have outgrown it, how to map a Zap onto Vercel Cron and queues, and how to own secrets, retries, and idempotency yourself.
Connecting Two Systems Without Breaking Either: API Integration Patterns
A technical guide to building integrations that hold up. Deciding the source of truth, handling API keys and OAuth token expiry, respecting rate limits and pagination, choosing sync versus async, surviving partial failure, and reconciling drift, with code you can adapt.
Custom WhatsApp Automation With the Cloud API: A Technical Guide
A technical guide to building WhatsApp automation on the official Cloud API instead of a third-party builder. When to graduate from ManyChat, how the API works, receiving messages by webhook, the 24-hour window and templates, conversation state, opt-in and human handoff, with code.
Scheduled Jobs and Background Work on Vercel: A Technical Guide
A technical guide to running cron and background work on Vercel despite short-lived functions. Vercel Cron, offloading long work to a queue, preventing overlapping runs with a lock, making jobs idempotent and resumable, and knowing when a job fails or never ran, with code.
Build a RAG Assistant on Your Own Data: A Technical Guide
A technical guide to building a retrieval augmented generation assistant grounded in your own documents. Why RAG beats fine-tuning for most businesses, the ingest-chunk-embed-retrieve pipeline, getting chunking right, grounding to stop hallucinations, access control, and evaluation, with code.
Putting an LLM in Production Safely: A Technical Guide
A technical guide to taking an LLM feature from demo to production. Treating prompt injection as a real threat, controlling cost and latency, planning for failure and nondeterminism, input and output guardrails, protecting your data and keys, and abuse limits, with code.
Structured Output and Tool Calling: Making an LLM Act on Your Systems
A technical guide to getting reliable structured data out of an LLM and letting it safely call your functions. Why parsing free text fails, JSON schema output with validation, designing tools like a careful API, the execution loop, and guardrails, with code.
A Stripe Integration That Survives the Edge Cases
A technical guide to integrating Stripe so it holds up in production. Why you fulfill on the webhook and not the redirect, idempotency on the way in and out, Strong Customer Authentication, refunds and disputes, reconciliation, and testing, with code.
Subscriptions and Billing Done Right: A Technical Guide
A technical guide to building recurring billing that holds up. Why subscriptions are harder than one-time payments, letting the processor own the recurring logic, granting access from subscription state, proration, dunning for failed payments, trials and cancellations, and a self-serve portal, with code.
PCI Without the Pain: Taking Card Payments the Safe Way
A technical guide to handling card payments without drowning in PCI compliance. The one rule that collapses your scope, keeping card data off your servers with hosted fields and tokenization, what you must never do, locking down the checkout page, and hosted versus embedded checkout.
Going Headless: A Next.js Storefront on Shopify or WooCommerce
A technical guide to building a headless storefront. What headless actually means, when it is worth it and when it is not, the architecture on Vercel, why you keep the platform's checkout, caching and revalidation, and protecting SEO and speed, with code.
Make Your Store Fast: Core Web Vitals and Revenue
A technical guide to a fast online store and why it matters to the bottom line. What the Core Web Vitals mean in plain terms, optimizing images, taming third-party scripts, edge caching, shipping less JavaScript, and measuring real users, with practical fixes.
Replatform Without Losing SEO: A Technical Migration Guide
A technical guide to changing eCommerce platforms without losing your search rankings. Why replatforms tank SEO, building a complete URL map, 301 redirects done right, preserving on-page SEO, launching fast and indexable, and monitoring afterward, with code.
From Idea to MVP: Scoping a First Phase That Pays for Itself
A practical guide to turning a software idea into a first phase that ships and pays for itself. Finding the one workflow worth building first, cutting scope to the core, defining done before you start, building in thin slices, and choosing durable tech.
Escaping No-Code Lock-In: Moving From Bolt or Lovable to Code You Own
A technical guide to graduating from no-code AI builders to software you own. Why builders are great until they are not, the signs you have outgrown one, what owning your app means, and how to move your code and data to Vercel incrementally without downtime.
Database Design for Non-DBAs: A Practical Technical Guide
A practical guide to designing a database you will not regret. Modeling real entities and relationships, choosing keys and types, letting the database enforce integrity, normalizing sensibly, indexing for your queries, and changing the schema safely with migrations, with code.
Don't Lose Your Data: Backups and Disaster Recovery for Small Businesses
A technical guide to backups and disaster recovery that actually work. Why an untested backup is not a backup, what to back up, the 3-2-1 rule, point-in-time recovery, defining RPO and RTO, testing restores, protecting against ransomware, and writing a runbook, with code.
Observability for Small Apps: Logs, Errors, Uptime, and Alerts
A technical guide to seeing inside your app without enterprise tooling. Structured logging, error tracking, uptime checks, useful metrics, alerts that page you instead of spamming you, correlating with a request id, and catching silent failures, with code.
Shopify Functions: Custom Discounts and Cart Logic Without an App
A technical guide to Shopify Functions, the modern way to add custom discounts, cart, and checkout logic that used to need Scripts or a paid app. How Functions work, writing a discount Function, the input query, deploying with the CLI, and when a Function beats another subscription, with code.
Customizing Shopify Checkout: Checkout Extensibility After checkout.liquid
A technical guide to Shopify's Checkout Extensibility, the supported way to customize checkout now that checkout.liquid is deprecated. Checkout UI extensions, custom fields and banners, the branding API, validation with Functions, and what no longer works, with code.
Shopify Metafields and Metaobjects: Custom Data Without the App Bloat
A technical guide to modeling custom data in Shopify with metafields and metaobjects instead of installing apps. The difference between them, defining fields, rendering in Liquid, querying with the Storefront and Admin APIs, and connecting them to products, with code.
Replace Your App Stack: When to Build a Custom Shopify App
A technical guide to deciding when a custom Shopify app beats a stack of subscriptions, and how one is built. The real cost of app stacking, what a custom app can do, the Remix and App Bridge stack, the Admin API, webhooks, and a five-apps-to-one case, with code.
Online Store 2.0 Theme Development: Custom Sections and Blocks
A technical guide to building a custom Shopify theme the merchant can still edit. How Online Store 2.0 works, building sections and blocks with schema, JSON templates, app blocks, and metafield-driven content, so the design is bespoke but editable in the theme editor, with code.
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