Software development document template: how to write plans and plans

Key points of this article

The plan answers "what to do, how to do it, and why", and the plan answers "who, when, and at what pace to do it." Do not mix the two parts.
Project-level documents are usually a set of documents. A document list is listed first, and then the boundaries and responsible persons of each document are determined.
When selecting technology, you need to write down the reasons and alternatives, and only the conclusion. It will be difficult to convince others during the review.
Each milestone must clearly state the deliverables and completion standards, otherwise the plan cannot be accepted.
Fixed the title hierarchy, table styles and revision history, so subsequent projects only need to replace the placeholders.

If you are responsible for a software project for the first time, you will often be asked to "come up with a plan first" and then make up a "plan". After opening a blank document, I don’t know where to start. I often end up writing a mixture of meeting minutes and task lists. During the review, no one can tell what questions it answers. This article is aimed at project leaders and developers. It explains how to build a software development document template, focusing on project-level solutions and plans, rather than a single work summary.

After reading, you can get three things: a set of methods for dividing the document system, the structure and writing methods of plans and plans, and the steps to layout the template in Word or UniDoc editor. The examples in this article all use placeholders, just replace them with the content of your own project.

Should the software development plan and plan be written separately? One sentence conclusion

They should be written separately: the plan stipulates "what to do and how to do it", and the plan stipulates "who, when and at what pace to do it". The same document should also be presented in chapters.

your situation	Recommended practices	reason
The team is small and the cycle is only a few weeks	Synthesize a project document, with the plan in front and the plan in the back	There are few documents and only one copy will be read during the review.
Separate approval across departments, technology and scheduling	The plan and plan are split into two documents	Technical reviewers and scheduling approvers are different
Demand is not yet stable	The plan only contains principles and scope boundaries, and plans are only scheduled to recent milestones.	There will be more changes in the later stage, and the detailed arrangement will soon be invalidated.
Customer requires formal delivery	Submit documents one by one according to the document list, with revision records attached	Facilitates acceptance and traceability
The organization already has a unified template	Based on the organizational template, this article is structured as a checklist	Avoid duplication of standards

Template structure overview

part	what to write	Space suggestion
Document information	Project name, version, author, reviewer, revision record	a table
Project background and goals	Problem to be solved, business goals, success criteria	1–2 paragraphs
scope and boundaries	What is included in this issue and what is explicitly not included	3–5 items
Technical solution	Architecture, technology selection and rationale, interfaces and data	2–4 segments, can be equipped with architecture diagram
Risks and Responses	Risk description, impact, response measures, responsible person	3–5 items
development plan	Phase division, milestones, deliverables, completion criteria	a table
Personnel and division of labor	Roles, Responsibilities, Responsible Persons	a table
Acceptance criteria	Completion conditions for each deliverable	3–5 items

How to write part by part

Document information and document list

List the document set of this project at the beginning of the document, such as "Software Development Plan", "Software Development Plan", "Requirements Specification", "Test Plan" and "User Manual". Each document states the file name, version, person responsible and status. The work summary after the end of the project belongs to another type of document and will not be discussed here.

Example: "[Project name] software development plan, v [version number], person in charge [name], status [draft/under review/released]."

Project background and goals

Use two or three sentences to explain the current situation and problems, and then write down the goals. The goal should be checkable, and don’t write vague statements like"improving the experience."

Example: "Goal: [Functional module] goes live by [date], covers [business scope], and [metric] reaches [number] after go-live."

Scope and Boundary

Divided into two columns: "Included in this period" and "Not included in this period". Exclusions are easy to overlook, but they are key to controlling later requirements creep.

Example: "This issue contains [Module A] and [Module B]; this issue does not include [Module C], which is left for the second phase of evaluation."

Technical solution

First give the overall structure, and then write down the selection item by item. Write three things about each selection: what you chose, why you chose it, what alternatives you considered, and the reasons why you didn’t choose it.

Example: "[Framework] was adopted for the backend because the team had experience with it and sufficient problem data; the alternative [Framework] was not adopted for [Reason]."

Risks and Responses

Write down the risks, impacts, responses and responsible persons in a table or list. Risks need to be specific enough that you can take action in advance.

Example: The risk is [relying party interface delay], the impact is [joint debugging time compression], the response is to develop with simulated data first, and confirm the interface before [date], the responsible person [name].

Development Plan

Divided by stages, the common ones are requirement confirmation, design, development, testing, and launch. Write down the completion time, deliverables and completion criteria for each milestone. Use [date] as a placeholder for the time, and fill it in after the schedule is confirmed.

Example: Milestone "Interface joint debugging completed", time [date], deliverables are [interface document] and [joint debugging report], completion standard is [interface use case] all passed.

Personnel and division of labor

List roles, responsibilities and responsible persons. If one person plays multiple roles, indicate the priority to avoid any link that no one is responsible for.

Acceptance criteria

Each deliverable corresponds to an acceptance criterion, which is written as a condition that can be checked, such as "all functional lists have passed testing, and remaining defects have been confirmed by [role]". Avoid writing something that cannot be judged by just saying "it worked well."

Layout in the editor

In Word, use "Title 1" to divide the plan and plan into two parts, and use "Title 2" to divide each section to facilitate automatic generation of a table of contents.
Use the same style for all tables, and set the header row to repeat across pages, so that the column names can still be seen after turning the page of a long table.
Place a revision record table at the beginning of the document. Update the version number and date for each change. Do not use file names such as "final version" and "final modified version."
When multiple people need to collaborate or continue to modify on the web page, you can open the Word file in the UniDoc web editor (app.unidoc.top) and maintain compatibility with Word during editing.
Export the review manuscript to PDF and send it, and keep the original Word file as the manuscript; if you need to sign or fill in the form on the PDF, you can use the PDF editor in the desktop client (download.omnidoc.top).
Before publishing, search the square brackets [ ] in the full text and confirm that all placeholders have been replaced.

Common writing problems

The proposal is written as a plan: only a timetable, without technical justification and comparison of alternatives.
The milestone only says "development completed", there are no deliverables and completion standards, and it cannot be accepted.
Only write "included in this issue" and do not write "not included". If you need to add it later, you will continue to add it.
Risks are only listed, without countermeasures or responsible persons.
Placeholders are sent to reviewers without replacement.
Save a copy of the same file on multiple computers, and the versions will overwrite each other.

❓ Frequently Asked Questions (FAQ)

1. What is the difference between a software development solution and a software development plan?

The plan answers what to do, how to do it, and why; the plan answers who will do which step at what time. The plan focuses on technology and scope, while the plan focuses on time and personnel.

2. Do I need to write a full set of documents for a small project?

No need. Just keep the documentation information, scope and boundaries, technical solutions, and milestones. Risks and acceptance criteria can be added when the project enters a critical stage.

3. Can the software development plan template use tables instead of text?

Tables are suitable for milestones and division of labor, but the purpose and judgment basis of each milestone need to be explained in one or two sentences, otherwise the reviewers will not understand why they are arranged in this way.

4. Can the software development plan template be directly applied to other projects?

The structure can be reused, but the background, selection, and risks must be rewritten according to the project, otherwise it will be easily questioned during the review.

📝 Summary

The core of the software development document template is to first delineate the document set, and then write the plan (what to do, how to do it) and the plan (who, when, and at what pace) separately. Each item is written to the extent that it can be inspected and accepted, and revision records are kept. After the template is fixed, changing the project only requires replacing the placeholders and rewriting the background and selection.

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