Business Owners & Non-IT Departments Must Read! A Complete Guide to System Development Basics Explained Through Cooking Analogies

Although you may have heard the term \"System Development,\" do you have a concrete idea of what it entails? \"It looks difficult,\" \"It will cost a lot,\" \"What if it fails...\" Many business owners and department heads harbor such anxieties. However, the essence of system development lies on the continuum of the tasks you perform daily.

In this article, we explain the overall picture of system development using familiar analogies while minimizing technical jargon. Once you read this, conversations with vendors will no longer seem intimidating. This knowledge will surely prove useful when making management decisions or approving budgets.

1. What is System Development? In Cooking Terms, It's \"Serving a Full Course Meal\"

Understanding Concepts Through Familiar Analogies

To put it simply, system development is \"building a mechanism to solve business challenges.\" Let's compare this to cooking. To satisfy customers (employees or clients), the chef (development team) thinks of the menu (features), cooks the ingredients (data and technology), and serves it. That is system development.

In other words: It is creating necessary functions using computers to achieve business objectives. It refers to the entire process of generating business value, not just writing programs.

Concrete Examples in Daily Business Scenarios

For example, suppose there is a challenge where \"order processing takes too much time.\" This is akin to \"customers waiting because food is served slowly.\" In system development, we create a mechanism (ordering system) that automatically relays orders to the kitchen, shortening the service time. As a result, customer satisfaction improves, leading to increased sales.

Use Cases Where This Helps

• When manual tallying errors persist
• When employees repeat the same tasks
• When responses to customers are delayed
• When email is overused for information sharing, making searches impossible

2. Understand the 7 Development Stages Through \"Building a House\"

The Flow from Requirements Definition to Operations

There are generally seven steps in system development. This closely resembles the process of building a house. Without stacking bricks immediately, it starts with drawing blueprints. By following this order, you can protect quality and budget.

1. Requirements Definition (Deciding what kind of house)
2. External Design (Deciding exterior and floor plan)
3. Internal Design (Deciding wiring and plumbing)
4. Coding (Actually building)
5. Testing (Safety checks)
6. Release (Handover)
7. Operations & Maintenance (Maintenance)

Comparison Before and After Implementation

Before: Starting production by skipping steps results in a system that ends up being difficult to use. Rework causes the budget to double.
After: By taking steps sequentially, the post-completion vision is shared, drastically reducing rework. Since everyone involved aligns their understanding, troubles can be prevented beforehand.

Especially the initial \"Requirements Definition\" is most important. If you say \"we want a three-story building\" here, you can prevent rework like \"changing to a four-story building\" later. Neglecting this will incur a large bill in subsequent stages.

3. Waterfall vs. Agile... The Difference Between Trains and Taxis

How to Choose a Development Method

There are two main types of development progression. \"Waterfall Model\" and \"Agile Methodology.\" Let's compare this to transportation methods. Knowing how to switch based on project nature is the key to success.

Waterfall Model (Train): It proceeds according to fixed routes and schedules. Once departed, you cannot get off midway. Suitable when you want to proceed according to plan. Chosen when fixing budget and schedule.

Agile Methodology (Taxi): While heading to the destination, you can change routes mid-way saying \"this road might be better.\" Its feature is high adaptability to changes. Chosen when market changes are drastic.

Use Cases Where This Helps

• Waterfall: Government projects, clear requirements with few changes, large-scale systems
• Agile: Startups, wanting to add features while watching market reaction, new businesses

Translating Technical Terms

If you hear the word \"Iteration,\" remember it means \"a small development cycle.\" In taxi terms, it's like advancing and confirming section by section. The merit is that you can frequently view deliverables and confirm progress.

4. The Difference Between \"Development\" and \"Construction\"... Bespoke vs. Ready-Made

System Development and System Implementation

\"Development\" and \"Construction\" appear similar but differ. Let's compare this to clothing design. Understanding this difference alone clarifies your requests to vendors.

System Development (Bespoke): Design from scratch and write code. Perfectly matches your company's requirements, but costs money and time. Suited for highly unique operations.

System Implementation (Ready-Made + Adjustments): Combines existing software. Imagine buying a suit and hemming it. You can start quickly. Suited for standard operations like accounting or HR.

Concrete Examples in Daily Business Scenarios

When introducing an accounting system, \"implementing\" an existing package is common. However, if there are unique special sales rules, you must \"develop\" from zero. Judge based on where your company's competitive advantage lies.

Comparison Before and After Implementation

Before: Trying to build everything yourself leads to budget overruns. Extended development periods cause opportunity losses.
After: Balancing ready-made utilization and custom builds optimizes costs. Resources can be concentrated on core operations.

5. Dramatic Before/After from Manual to Automated Changes Post-Implementation

Benefits of System Introduction

What changes occur in operations when a system is introduced? Let's visualize with concrete numbers. This perspective is also useful for business planning.

Before (Manual): Invoice creation takes 3 hours/person/day. Error rate 5%. Overtime 20 hours/month. Dependent on specific individuals; stops if the person is absent.
After (Systematized): Invoice creation takes 30 minutes/person/day. Error rate 0%. Overtime 5 hours/month. Anyone can handle it, and operations become standardized.

Use Cases Where This Helps

• Inventory management is off-track, delaying accounts receivable collection
• Customer information is scattered across Excel files
• Information sharing is impossible with remote work
• Analysis takes time, delaying decision-making

A system is not magic, but used correctly, it becomes the \"ultimate tool\" to dramatically improve operational efficiency. The implementation itself is not the goal; how you use it is important.

Translating Technical Terms

\"DX (Digital Transformation)\" means changing operations and culture itself using systems. It is not merely paperless conversion. It is a broad concept including business model transformation.

Frequently Asked Questions Q&A

Q1. How much does the budget cost?

A. Depending on scale, small-scale is several million yen, large-scale is tens of millions of yen. It is best to start by organizing current issues to get accurate estimates. Also consider operating costs as hidden costs.

Q2. Too many stakeholders internally; opinions cannot be consolidated

A. Decide on one ultimate decision-maker (Project Owner). If you aim for consensus among everyone, development stalls. Prioritize and select functions that must be done versus those that can wait.

Q3. Is maintenance required after completion?

A. It is mandatory. Like a vehicle inspection, regular checks, security measures, and feature additions are required. The system truly begins after release.

Q4. Should we build it ourselves or outsource?

A. Core technologies should be in-house; general functions should be outsourced. Concentrate your company's resources on the most valuable parts. Selecting an outsourcing partner is also an important management decision.

Where to Start? Proposal for Concrete First Steps

List Current \"Pain Points\"

Before contacting vendors immediately, identify internal \"pain points.\" Gather voices like \"That task takes 1 hour every day.\" This becomes material for requirements definition.

First Action: Interview leaders of each department for their \"Top 3 Wasteful Tasks.\" That becomes the seed for system development. Prioritize based on frequency and impact rather than quantity.

Create Small Success Experiences

Instead of a company-wide rollout, starting with a \"pilot version\" limited to one department is also an option. If successful, other departments will agree. Even if it fails, impact can be minimized.

Glossary (Concise Explanation of 5-10 Important Terms)

1. Requirements Definition: The process that forms the blueprint for deciding what the system will achieve. It is no exaggeration to say everything depends on this.

2. SE (Systems Engineer): A technician who designs systems and manages overall progress. In construction terms, they are both architects and site supervisors.

3. PG (Programmer): A technician who actually writes code based on design documents. In construction terms, they are carpenters.

4. Bug: Malfunctions or errors within a program. The earlier they are found, the lower the correction cost.

5. Release: Making the system public and usable. Migrating to the production environment.

6. Operations & Maintenance: Continuing to operate the system after release, performing repairs and updates. Running costs are incurred.

7. UI (User Interface): Parts users directly touch, such as screens. Usability is determined here.

8. DB (Database): Like a warehouse for organizing and storing data. The foundation for search and analysis.

9. Cloud: Server environments utilized via the internet. No need for company ownership, keeping initial costs low.

10. API: Connection components linking different systems together. Used when integrating with external services.