Executives & Non-IT Departments Must Read! A Beginner's Guide to Mastering System Development via 'Restaurant Management'

What Exactly Is System Development? An Introduction to Clearing Up Doubts

When you hear "System Development," many non-IT department staff and executives might feel a bit apprehensive. Images such as "programming is required," "technical jargon is difficult," and "it looks expensive" often come to mind, making it unclear what is actually done and why it is necessary for your own company. However, essentially, system development is nothing other than "building mechanisms to solve business challenges". For example, automating tallying work that used to take hours manually, or centrally managing customer information that was scattered across departments. This is absolutely not magic; it is the process of creating "tools" to make your company's operations better. There is no need to overthink it; it starts with considering "how can we make this troublesome part of current operations easier?" In this article, we will explain the overall picture of such system development so that even those without specialized knowledge can intuitively understand it, using familiar analogies.

Understand with Familiar Analogies! System Development is the Same as "Restaurant Management"

The best way to grasp the overall picture of system development is through the analogy of "restaurant management." First, listening to customer requests is "requirements definition." Organizing requests like "we want allergy accommodations" or "the budget is around this much." Next, deciding the menu and kitchen workflow is "design." Actually cooking the dishes is "programming (implementation)," checking if the finished dish tastes good is "testing," and serving it to customers is "release." Cleaning the kitchen and restocking ingredients after service corresponds to "operations & maintenance." As seen in this analogy, system development is not just about writing code; it refers to the entire "series of processes to shape customer requests and maintain them". It is not just the image of chefs working silently in the kitchen; the process where the manager oversees everything and ensures customer satisfaction is the essence of system development. With this perspective, the importance of each phase becomes naturally understood.

Section 1: Why is System Development Needed Now? The Truth of Operational Efficiency

Limits and Risks of Excel Management

Business management via Excel remains the mainstay in many companies. However, as data volume increases and the number of people sharing grows, risks rise regarding file version control confusion or accidentally deleting data. The biggest reason to introduce system development lies in eliminating such "eliminating Individual Dependency and Human Error". For example, if sales representatives manage customer lists individually, information may be lost if the representative resigns. If systemized, information can be shared on the cloud, allowing anyone to check the latest status. Before (pre-introduction), searching took 10 minutes and errors were frequent; After (post-introduction), searches happen instantly, and input errors are prevented. This time saving enables employees to allocate time to creative work, ultimately leading to strengthened corporate competitiveness.

Section 2: Explaining the 7 Steps of System Development Clearly

Flow from Upstream to Downstream

System development typically proceeds in 7 steps. 1. Requirements Definition (What to build), 2. External Design (Screens and specs), 3. Internal Design (Internal structure), 4. Manufacturing (Programming), 5. Testing (Function verification), 6. Migration/Release (Production deployment), 7. Operations & Maintenance (Sustained management). Especially important is the initial "Requirements Definition." If requests are mistaken here, the completed system may become unusable. This is like starting to erect pillars without a blueprint in house construction. At each stage, alignment between the ordering side and the development side is indispensable. By holding a common language like "So, it means XX" and thoroughly aligning expectations, rework can be prevented, and the project can be completed according to schedule. Clarifying completion conditions for each step is the key to success.

Section 3: Cost and Personnel Structure "What is Man-Months?"

Transparency of Cost Structure

The unit "man-month" often heard in system development cost estimates. This represents "the amount of work one engineer can handle in one month." For example, a 10 man-month project is a scale that can be completed by 1 person in 10 months, or 10 people in 1 month. Most of the cost consists of these labor expenses. The reason for the high price includes securing engineers with specialized knowledge and project management costs. However, with proper investment, long-term labor cost reduction effects can be expected. If a department that previously had 10 hours of overtime monthly achieves zero overtime through system introduction, cost benefits exceeding the investment will be generated within a few years. Viewing it as "not 'expensive', but 'high return on investment'" is crucial in management judgment. When budgeting, consider not only initial costs but also running costs.

Section 4: Risk Management and Success Factors to Avoid Failure

Common Troubles and Countermeasures

The most common causes of failure in system development are "vague requirements" and "insufficient communication." Vague instructions like "somehow having such a function would be nice" create deviations in the finished product. Also, frequently changing specifications during development inflates costs and time. The key to success is an approach of "start small and gradually grow larger". Instead of aiming for a perfect system from the start, releasing necessary functions and improving them while operating is effective. Also, holding regular meetings among project members to visualize progress is important. To prevent individual dependency, a culture of thoroughly retaining documents is indispensable. Recognizing that doing nothing out of fear of risk is itself the greatest risk, and pushing forward under appropriate management is required.

Section 5: Future Trends and Role in Promoting DX

Utilizing Cloud and AI

Currently, utilizing "cloud" and "AI" is mainstream in system development. By using cloud services instead of preparing servers in-house, initial costs can be significantly reduced. Also, utilizing generative AI dramatically improves efficiency in simple code creation and data analysis. This is not merely technological innovation but signifies business model transformation (DX). Through system development, if decision-making based on data becomes possible, responses to market changes can be quick. IT talent shortages are expected to worsen further, so cooperating with external experts while raising literacy for utilizing systems internally is important. Systems should be viewed not as goals but as infrastructure supporting ever-changing businesses, requiring a perspective of continuous updates.

Frequently Asked Questions Q&A

Q1: Does it have to be completely original?
A: No, customizing existing package products (SaaS) is sufficiently effective. If you want to reduce costs and time, consider utilizing existing products first.

Q2: How long does the development period take?
A: Depending on scale, small-scale projects are 1-3 months, large-scale projects are around 6 months to 1 year. Carefully advancing requirements definition is the secret to short-term completion.

Q3: Is it okay if there are no in-house engineers?
A: It is fine. Outsourcing to an external development company is common. However, a liaison contact person needs to be prepared within the company to convey requirements.

Q4: Is maintenance after completion necessary?
A: It is mandatory. Systems are like cars and require periodic inspections and updates. Signing a maintenance contract allows peace of mind regarding support during trouble.

Where to Start? Concrete Proposal for the First Step

If interested in system development, the first thing to do is "inventory of operations". List within your company's operations "which task takes the most time" and "which task has errors." Then, consider if they can be solved by systemization. Next, try requesting quotes from multiple development companies to grasp a rough budget and schedule estimate. There is no need to start a large project immediately. Starting with a small trial project and accumulating success experiences makes it easier to gain understanding within the company. Take the first step toward digitalization by reducing one "troublesome task" first.

Glossary

■Requirements Definition: Phase where specific functions and performance required for the system are decided.
■SE (Systems Engineer): Technicians who design and manage systems.
■PG (Programmer): Technicians who actually write code based on design documents.
■Bug: Malfunctions or errors within a program.
■Server: Computers that store and provide systems and data.
■Cloud: Form of using services and data via the internet.
■DX: Transforming business and organizations using digital technologies.
■SaaS: Form of using software as a service.
■UI/UX: Design of screens and operability when users use the system.
■Maintenance: Sustained management and correction work after system operation begins.