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Services/Custom Software Development

Custom ERP for SMEs built around your operation

Generic ERP systems cover many use cases, but when your processes have specific requirements—local integrations, unique workflows, Mexican regulations like CFDI e-invoicing—a custom-built system can fit exactly how your business operates. At AISDC we design and develop ERP for small and medium businesses in Mexico, integrating sales, purchasing, inventory, finance and operations into a single platform. The result is full business visibility without relying on spreadsheets or disconnected systems.

How we work

Process diagnosis

We analyze how your business operates today: which systems you use, where the bottlenecks are, and what information you need to make decisions. This becomes the functional map for your ERP.

Design and architecture

We define the modules, data flows and integrations—SAT/CFDI, banks, point of sale and others—and agree on delivery phases so your team can adopt the system in an orderly, manageable way.

Phased development and implementation

We build the system in short iterations with functional deliverables. Your team can start using the first modules while we continue developing the next ones.

Training, support and evolution

We train your team, accompany the go-live, and remain available for adjustments, new modules and technical support as your company grows.

What it includes

Sales and CFDI invoicing

Management of quotes, orders and electronic invoicing stamped with Mexico's SAT. End-to-end flow from point of sale or web portal to a valid CFDI invoice—no re-entry of data.

Purchasing and inventory

Purchase order control, goods receipt, inventory valuation and minimum-stock alerts. Real-time visibility of what comes in, what goes out and what remains in stock.

Finance: accounts receivable and payable

Customer and supplier balance tracking, bank reconciliation, projected cash flow and basic financial statements integrated with daily operations.

Production and operations for your industry

For manufacturing: production orders, material consumption and costing. For services: project tracking and resource assignment. Adapted to what your business actually does.

Reports and management dashboard

Key business indicators on a configurable dashboard: monthly sales, product profitability, aging balances and more—without exporting to spreadsheets.

Modules that grow with the company

We start with the most critical modules and add functionality as your operation requires it. The system scales without needing to change platforms.

Use cases

SME that outgrew Excel and siloed systems

A service company with invoicing in one system, inventory in spreadsheets and collections managed through email. We integrated everything into a unified ERP that eliminates double data entry and provides real-time financial visibility.

Distributor or wholesale business

A distribution business with multiple suppliers, credit customers and delivery routes. The ERP centralizes purchasing, inventory, CFDI invoicing and collections, with full traceability of every product movement.

Small manufacturer with proprietary processes

A workshop or plant with production orders, input consumption and manufacturing costs that no standard ERP models well. We build the production module around your actual process—not the other way around.

Integrations

CFDI e-invoicing / SAT (stamping)Payment complement and carta porteMexican banks (reconciliation)Point of sale (POS)E-commerce (online store)Payroll and IMSSCONTPAQi / AspelEmail and automated notifications

Frequently asked questions

What is an ERP for SMEs?+

An ERP (Enterprise Resource Planning) is a system that integrates a company's core processes—sales, purchasing, inventory, finance, production—into a single database. For an SME, the goal is to replace spreadsheets and disconnected systems with a platform that centralizes information and enables decisions based on real, up-to-date data.

Why a custom ERP instead of SAP, Odoo or another standard solution?+

Standard ERPs like SAP Business One, Odoo or CONTPAQi are solid options for many businesses and are worth evaluating. A custom build makes sense when your processes are specific enough—proprietary workflows, local system integrations, particular regulatory requirements—that adapting a standard system would cost more than building a dedicated one, or when available modules simply don't cover your industry. At AISDC we do that diagnosis with you before recommending a direction.

Does the ERP include CFDI invoicing?+

Yes. We integrate CFDI stamping directly into the sales flow of the system, using an authorized certification provider (PAC). The process goes from quote or order to a stamped invoice delivered to the customer—without leaving the ERP or re-entering any data.

Can it be implemented in modules or phases?+

Yes, and that is how we recommend it. We start with the highest-impact modules—typically sales, inventory and invoicing—and add functionality in subsequent phases. This reduces implementation risk, lets your team adapt gradually and spreads the investment over time.

How do I know whether a custom ERP or a standard one is right for me?+

It depends on how well a standard system models your actual processes. If your operation is relatively conventional and a commercial ERP covers it well, that path is usually faster and more cost-effective. If you have differentiating processes, specific integrations, or the cost of customizing a standard system becomes significant, then a custom build can be the more efficient long-term choice. In the initial consultation we assess your situation with no commitment required.

Ready for your custom CRM?

Tell us how your real estate business operates and we will propose a system designed for your process.

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