---
description: Microsoft 365を実際に使用したユーザーのレビューから、製品の機能や価格、メリットデメリットをご覧いただけます。類似製品との比較も簡単、ぴったりのSaaSが見つかるはず！
image: https://gdm-localsites-assets-gfprod.imgix.net/images/capterra/og_logo-e5a8c001ed0bd1bb922639230fcea71a.png?auto=format%2Cenhance%2Ccompress
title: Microsoft 365とは？ | 機能や料金、導入事例をご紹介【キャプテラ】
---

現在地表示: [ホーム](/) > [グループウェア](/directory/15/collaboration/software) > [Microsoft 365](/software/58688/microsoft-365)

# Microsoft 365

Canonical: https://www.capterra.jp/software/58688/microsoft-365

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> 統合されたアプリケーション・スイートには、インターネットを介して24時間年中無休でアクセスできる、メール、カレンダー、アドレス帳が含まれています。
> 
> 評価：14048人のユーザーによる評価は**4.6/5**。**おすすめ度**で最高の評価。

-----

## 概要

### Microsoft 365の対象ユーザー

クラウドベースのサブスクリプション・サービスでは、ExcelやOutlookなどのアプリをクラウド・サービスと組み合わせることで複数のツールを統合し、大企業の従業員があらゆるデバイスから作成や共有を行えるようにします。

## 簡単な統計と評価

| 測定基準 | 評価 | 詳細 |
| **総合評価** | **4.6/5** | 14048 レビュー |
| 使いやすさ | 4.5/5 | レビュー全体に基づく |
| カスタマー・サポート | 4.3/5 | レビュー全体に基づく |
| 価格の妥当性 | 4.3/5 | レビュー全体に基づく |
| 機能 | 4.6/5 | レビュー全体に基づく |
| おすすめ率 | 90% | (9/10 おすすめ度) |

## 企業情報

- **キャプテラについて**: Microsoft
- **ロケーション**: Redmond, アメリカ
- **設立**: 1975

## ビジネスコンテキスト

- **価格プラン**: $6.00
- **価格モデル**:  (無料のトライアル)
- **対象となる企業**: 自営業, 2～10, 11～50, 51～200, 201～500, 501～1,000, 1,001～5,000, 5,001～10,000, 10,000+
- **デプロイとプラットフォーム**: クラウド、SaaS、ウェブベース, Mac（デスクトップ）, Windows（デスクトップ）, Android（モバイル）, iPhone（モバイル）, iPad（モバイル）
- **サポートされる言語**: アイルランド語, アラビア語, イタリア語, インドネシア語, ウクライナ語, オランダ語, ギリシャ語, スウェーデン語, スペイン語, スロベニア語, タイ語, チェコ語, デンマーク語, トルコ語, ドイツ語, ノルウェー語, ハンガリー語, フィンランド語, フランス語, ブルガリア語, ヘブライ語, ポルトガル語, ポーランド語, ラテン語, ラトビア語, ルーマニア語, ロシア語, 中国語, 日本語, 繁体中国語, 英語, 韓国語
- **利用可能な国**: アメリカ合衆国, アルゼンチン, イギリス, インド, オランダ, オーストラリア, カナダ, コロンビア, シンガポール, スロベニア, チェコ, チリ, デンマーク, トルコ, ドイツ, ニュージーランド, フランス, ブラジル, ベトナム, ベルギー さらに9件

## 機能

- @メンション
- API
- アドレス帳
- アラート／通知
- イベント管理
- カレンダー管理
- カレンダー／リマインダー・システム
- コメント、メモ
- コラボレーションツール
- コンテンツ管理
- スケジューリング
- タスク管理
- チャット、メッセージング
- テンプレート
- テンプレートのカスタマイズ
- データの可視化
- ドキュメント・キャプチャ
- ドキュメント・ストレージ
- ドキュメント管理
- バージョン管理
- ファイル共有
- ファイル変換
- フルテキスト検索
- プレゼンテーション・ツール
- メッセージング
- メモ管理
- メール管理
- モバイル・アクセス
- レポート／分析
- 暗号化
- 検索／フィルター
- 連絡先管理
- 達成、リテンション

## 統合 (合計12件)

- Google Drive
- Microsoft Bookings
- Microsoft Excel
- Microsoft OneNote
- Microsoft Outlook
- Microsoft Planner
- Microsoft PowerPoint
- Microsoft SharePoint
- Microsoft Teams
- Microsoft Word
- OneDrive
- Zoom Workplace

## サポートのオプション

- メール/ヘルプデスク
- FAQ/フォーラム
- ナレッジベース
- 電話サポート
- 24時間対応（オペレータ）
- チャット対応有

## Category

- [グループウェア](https://www.capterra.jp/directory/15/collaboration/software)

## 関連カテゴリー

- [グループウェア](https://www.capterra.jp/directory/15/collaboration/software)
- [生産性向上ツール](https://www.capterra.jp/directory/30968/productivity/software)
- [スプレッドシートツール](https://www.capterra.jp/directory/31061/spreadsheet/software)
- [カレンダーツール](https://www.capterra.jp/directory/32297/calendar/software)
- [メール管理ソフト](https://www.capterra.jp/directory/30553/email-management/software)

## 代替製品

1. [Google Workspace](https://www.capterra.jp/software/168389/google-workspace) — 4.7/5 (17508 reviews)
2. [Google Docs](https://www.capterra.jp/software/160756/google-docs) — 4.7/5 (28836 reviews)
3. [Google Drive](https://www.capterra.jp/software/161425/drive) — 4.8/5 (28444 reviews)
4. [OneDrive](https://www.capterra.jp/software/161304/onedrive) — 4.5/5 (12652 reviews)
5. [Microsoft SharePoint](https://www.capterra.jp/software/1167/sharepoint) — 4.4/5 (5421 reviews)

## レビュー

### "Still not polished enough, but great value for money" — 4.0/5

> **Fernando** | *2026年3月2日* | Eラーニング | おすすめ評価：9.0/10
> 
> **良いポイント**: Impressive feature set, from simple to very complex, with an excellent value for the money. Good integration with new technologies, like cloud for file storage and file sharing, and a variety of systems to use it (Mac, Windows, Web, Android)
> 
> **改善点**: When a bug appears, it takes a lot of time to get fixed.&#10;Some implementations are very old and should be removed.&#10;Some features need proper implementation in newer systems.&#10;UI is a mixed bag of new and old technologies.
> 
> I started using Office when Office didn't exist. Separate programs, like Word, in the DOS era. It grew, consolidated into a bunch of separate programs that talked with OLE (God save us\!). Nowadays, the experience across the suite is much smoother, but there are a lot of rough edges to fix. For example, PowerQuery is a nice addition, but it needs to be polished a lot so the integration with Excel is better. Things like everyday work while moving the cursor are a pain if you are not accustomed to (try to move the cursor to edit a formula and you'll get mixed results).&#10;Microsoft needs to continue optimizing the interface, removing old features that no one uses, maybe using a plugin system, and consolidating the interface.&#10;Outlook is a good example of what Microsoft needs to do (create a new Outlook from scratch), but using the wrong way (removing useful features). As of today, if you switch from Classic to New Outlook, you'll miss lots of features, and you'll feel like a Guinea pig because Microsoft uses you to do the testing, adding or removing features. We are now everyday beta testers without that name.

-----

### "Microsoft 365 review" — 5.0/5

> **認証済みレビュアー** | *2026年3月13日* | コンピュータ、ネットワーク・セキュリティ | おすすめ評価：10.0/10
> 
> **良いポイント**: Simplified licensing compared to standalone Microsoft products, all the core tools we use are in one place (Outlook, Excel, Word, Teams, OneDrive, SharePoint).  Works well across devices and supports remote work&#10;Strong collaboration tools, especially for email, meetings, and shared documents.  Regular updates without having to manage version upgrades
> 
> **改善点**: Setup and configuration can be more complex than expected, especially around security and permissions.  Some features change frequently, which can be frustrating for users.  Costs can add up as you add users or higher‑tier licenses&#10;Not everything is intuitive, particularly for non‑technical users
> 
> Microsoft 365 has been a solid move for us overall. We switched to get away from managing individual Microsoft licenses, which had become a real headache. Having everything bundled under one subscription has made things much easier to manage and more predictable from a cost and admin standpoint.

-----

### "Powerhouse or paperweight.. the choice between paid and free" — 3.0/5

> **Blair** | *2026年3月2日* | インターネット | おすすめ評価：5.0/10
> 
> **良いポイント**: Paid version of M365: M365 is a powerhouse when it comes to utilising the key products they offer in Word and Excel for example, especially when combined with copilot. Outlook handles emails perfectly and the ability to share files with the click of a few buttons gives ease of use and makes M365 a tier 1 product.
> 
> **改善点**: The free version: M365’s free version is an absolute nightmare. Being restricted beyond anything productive, forced ads, aggressive reminders to upgrade to paid package. Once paid you’re essentially locked in. The subscription model for M365 is flawed. If you’re using free.. Google is a better option
> 
> If you’re on the paid version and happy to be locked in for a lifetime then M365 is the one for you. If you’re after free, in my experience, you’re better off with going with another product

-----

### "Microsoft 365 - A Power for Business" — 4.0/5

> **Troy** | *2026年1月11日* | コンピュータ、ネットワーク・セキュリティ | おすすめ評価：9.0/10
> 
> **良いポイント**: The subscription model offers excellent ROI by bundling industry-standard apps (Word, Excel, PowerPoint) with robust cloud services. It eliminates the need for expensive on-premises hardware and ensures I always have access to the latest feature updates without extra upgrade costs.&#10;The interface is intuitive and familiar, making adoption easy for anyone who has used Office products before. The seamless integration between apps—like opening a SharePoint file directly in Word or attaching a OneDrive link in Outlook—significantly reduces friction in my daily workflow.&#10;&#10;Exchange Online provides a reliable, secure backend for all my communication. Features like shared calendars, 100GB mailbox storage, and superior spam filtering make managing high volumes of email effortless across all my devices.&#10;&#10;Sharing is granular and secure. I can easily generate links with specific permissions (view-only, edit access, or password protection) for both internal colleagues and external clients, ensuring data stays safe while collaborating in real-time.&#10;&#10;Document Management: It serves as a central repository for all my work. The ability to use version history to restore previous drafts and the powerful search functionality across the entire ecosystem means I never lose track of important documents.&#10;&#10;The platform handles file compatibility seamlessly. It automatically converts legacy files (like old .doc formats) to modern standards and allows for easy export to PDF and other formats directly within the apps, saving me from using third-party conversion tools.&#10;&#10;While they handle critical issues effectively, the extensive self-help library and community forums are often just as valuable for quick troubleshooting.
> 
> **改善点**: While the support team handles major issues well, they can occasionally be inconsistent when addressing minor concerns.
> 
> Overall, it is a reliable solution that consistently meets my needs. It simply works. You can find what you need easily.

-----

### "The good and the bad of Microsoft 365" — 5.0/5

> **Oscar** | *2026年2月12日* | 通信 | おすすめ評価：10.0/10
> 
> **良いポイント**: What I liked most was that it is compatible with Windows and Mac, as well as the management of licenses, creation, modification and deletion of users.
> 
> **改善点**: The Authenticator application crashes a lot; it suddenly stops sending notifications, and I have to reset the MFA parameters so that users can configure their account.
> 
> Overall, my experience is good; I can reset passwords if the user forgets them, and it's easy to manage and install on workstations.

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