Notes from the build.
Writing on custom software, ERP and integration work, and the systems we build for Amazon sellers.
Amazon Vendor Central EDI Inside Your ERP: Running Wholesale and Direct Fulfillment in Production
A practitioner's guide to running Amazon Vendor Central EDI inside your ERP: the Wholesale and Direct Fulfillment connections, 753/754 routing and tracing rejections.
ENGINEERING NOTECostco EDI Integration Through SPS Commerce: 850, 855, 856 and 810
How Costco Wholesale EDI works through SPS Commerce when your ERP builds and reads every X12 file, based on the connection we run for a US consumer electronics brand.
ENGINEERING NOTECostco.com Dropship for Suppliers and Brands: Connecting Orders to Your ERP
A guide for suppliers and brands selling through Costco.com dropship: how the CommerceHub hub works, the order, ship and invoice flow, and why it belongs in your ERP.
ENGINEERING NOTETurning Handwritten Order Forms into Digital Orders with AI
How scanned paper work orders become structured digital orders through an AI document pipeline, and where a person still needs to check the result.
ENGINEERING NOTEHow to Calculate Landed Cost Inside Your ERP
What landed cost actually includes, why spreadsheets stop working once volume grows, and how to calculate it at receiving so inventory carries the real cost.
ENGINEERING NOTEMAP Monitoring: Catching Reseller Price Violations Automatically
What a minimum advertised price policy is, why checking reseller listings by hand does not scale, and how automated monitoring flags violations with evidence.
ENGINEERING NOTEMoving Off Sage Without Losing Your History
What to migrate when a business outgrows its bookkeeping software, which records matter most, and how to change systems without losing the operating history.
ENGINEERING NOTEMulti-Tenant Data Isolation in PostgreSQL: Getting Row Scoping Right
Row-based tenant isolation across shared tables, why every query has to carry the tenant, and how to test that one customer cannot see another's data.
ENGINEERING NOTERunning AI Document Processing On Your Own Hardware
When a cloud AI API is the wrong fit for document processing, how an on-site AI server and n8n fit together, and the trade-offs of owning the hardware.
ENGINEERING NOTEMatching Packing Slips to Sales Orders with OCR
How packing slips arriving by FTP get read, matched to the sales order that produced them, and routed to an exception queue when the match is not certain.
ENGINEERING NOTEHow to Automate Amazon FBA Inbound Shipments with SP-API
What the manual FBA inbound process costs in practice, how an automated flow works end to end, and what has to be right in your ERP before you build it.
ENGINEERING NOTECarrier Rate Shopping with FedEx, UPS and USPS APIs
How live carrier rate shopping works per order, why every response is worth logging, and how negotiated rates and delivery commitments change the selection.
ENGINEERING NOTEClassic ASP in 2026: The Real Risks of Keeping It Running
The practical risks of running a Classic ASP application today, from unsupported components to injection and XSS exposure, and why incremental migration lowers risk.
ENGINEERING NOTEEDI Inside Your ERP: X12 Mapping With EdiFabric, Direct or Through a Network
How EDI works when every X12 file is read and generated inside your ERP with EdiFabric, whether partners connect directly or through a retailer network.
ENGINEERING NOTEWhy an 856 ASN Gets Rejected, and How to Fix It
The common reasons an 856 advance ship notice gets rejected, how each one is actually diagnosed, and why keeping the raw outbound file changes how long it takes.
ENGINEERING NOTEWhy Our ERP Chatbot Gave Wrong Answers, and How We Fixed It
Most of what looked like AI error in our ERP assistant turned out to be data and prompt error. Here is what was actually wrong and what we changed.
ENGINEERING NOTEX12 EDI vs API Integration: Which Does Your Trading Partner Need?
What X12 EDI and API integration each actually are, why trading partners pick one or the other, and how both run side by side in a single ERP.
ENGINEERING NOTECommon Web Development Mistakes and How to Avoid Them
Ten recurring web development mistakes, from ignoring mobile responsiveness to skipping pre-launch testing, and the practical steps that avoid each one.
ENGINEERING NOTEWeb Development Myths: Common Misconceptions
Ten common misconceptions about web development, from the idea that anyone can build a site with no experience to the belief that launch is where the work ends.
ENGINEERING NOTEFront-End vs. Back-End Web Development
What separates front-end from back-end web development, the skills and tools each side relies on, how they work together, and where full-stack development fits in.
ENGINEERING NOTEThe Web Development Step-by-Step Guide
A step-by-step walk through building a website from scratch: defining goals, planning structure, picking a tech stack, building, testing, deploying, and maintaining it.
ENGINEERING NOTEBespoke Software Development: Tailored Solutions
What bespoke software development actually involves, why businesses choose it over off-the-shelf products, the build process behind it, and how to choose a development partner.
ENGINEERING NOTEWeb Design vs. Web Development: What's the Difference?
What separates web design from web development, why a website needs both, and how the two work together to shape a visitor's experience and a business's results.
ENGINEERING NOTEThe Best 10 Benefits of Custom Software Development
Ten reasons custom software tends to outperform off-the-shelf products over time, from flexibility and scalability to security, ownership, and long-term ROI.
ENGINEERING NOTEThe Custom Software Development Process, Explained
A walk through the six phases of a custom software development project, from discovery and planning through design, development, testing, and deployment.
ENGINEERING NOTEWhat Is a Web-Based Application? A Comprehensive Guide
What a web-based application actually is, how it differs from a desktop application, the main types in everyday use, and how AppsXone approaches building one.
ENGINEERING NOTEWhat We Do in Custom Web Application Development
A look at how AppsXone approaches custom web application development, from requirements gathering and architecture through to the CRM, ERP, and e-commerce systems we build.
ENGINEERING NOTEWhat Does Custom Web Application Development Involve?
A plain-English look at what custom web application development actually covers: how it differs from off-the-shelf software, what it's built from, and how the process runs end to end.