---
description: Cloudflare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: Cloudflare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](/) > [DDoS対策ツール](/directory/32782/ddos-protection/software) > [Cloudflare](/software/155191/cloudflare)

# Cloudflare

Canonical: https://www.capterra.jp/software/155191/cloudflare

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> Cloudflare Inc.は、より良いインターネットの構築を使命とするWebパフォーマンスおよびセキュリティ会社です。
> 
> 評価：528人のユーザーによる評価は**4.7/5**。**おすすめ度**で最高の評価。

-----

## 概要

### Cloudflareの対象ユーザー

Cloudflareは、何百万ものWebサイト、API、SaaSサービス、その他インターネットに接続されたプロパティを高速化し、保護します。

## 簡単な統計と評価

| 測定基準 | 評価 | 詳細 |
| **総合評価** | **4.7/5** | 528 レビュー |
| 使いやすさ | 4.6/5 | 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 | 4.6/5 | レビュー全体に基づく |
| 機能 | 4.7/5 | 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**: Cloudflare
- **設立**: 2009

## ビジネスコンテキスト

- **価格プラン**: $20.00
- **価格モデル**:  (無料版が利用可能)
- **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
- **サポートされる言語**: イタリア語, スペイン語, ドイツ語, フランス語, ポルトガル語, 中国語, 日本語, 英語, 韓国語
- **利用可能な国**: アイルランド, アメリカ合衆国, アラブ首長国連邦, イギリス, イスラエル, イタリア, インド, オランダ, オーストラリア, オーストリア, カナダ, キプロス, グリーンランド, サウジアラビア, スイス, スウェーデン, スペイン, デンマーク, トルコ, ドイツ さらに13件

## 機能

- API
- DDoS保護
- Global Network
- Real-Time Monitoring
- VPN
- Webアプリケーション・セキュリティ
- Webサイト分析
- アクセス制御・許可
- アクティビティのモニタリング
- アラート／通知
- エンドポイント保護
- コンテンツ管理
- コンプライアンス管理
- ダッシュボード
- データセキュリティ
- データ管理
- パフォーマンス測定基準
- ファイアウォール
- モデルトレーニング
- レポート／分析
- 暗号化
- 機械学習アルゴリズム・ライブラリ
- 異常・マルウェア検知
- 脅威インテリジェンス
- 脅威対応
- 脆弱性診断
- 負荷分散

## 統合 (合計33件)

- Adobe Commerce
- Amazon EC2
- Backblaze B2 Cloud Storage
- Buddy
- Chaossearch
- Coralogix
- Cordial
- Crafter CMS
- Crisp
- Desktop.com
- Drupal
- Eclypsium
- Google Analytics 360
- Hostinger
- Huckabuy Cloud

... さらに18件の統合

## サポートのオプション

- メール/ヘルプデスク
- 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

- [DDoS対策ツール](https://www.capterra.jp/directory/32782/ddos-protection/software)

## 関連カテゴリー

- [DDoS対策ツール](https://www.capterra.jp/directory/32782/ddos-protection/software)
- [ネットワークセキュリティソフト](https://www.capterra.jp/directory/30003/network-security/software)
- [ロードバランサー](https://www.capterra.jp/directory/30813/load-balancing/software)
- [サイバーセキュリティソフト](https://www.capterra.jp/directory/31037/cybersecurity/software)
- [クラウドセキュリティソリューション](https://www.capterra.jp/directory/31344/cloud-security/software)

## 代替製品

1. [ESET Endpoint Security](https://www.capterra.jp/software/151915/eset-endpoint-security) — 4.7/5 (1171 reviews)
2. [Orca Security](https://www.capterra.jp/software/188445/orca-security) — 4.8/5 (60 reviews)
3. [Malwarebytes for Teams](https://www.capterra.jp/software/212346/malwarebytes-for-teams) — 4.5/5 (161 reviews)
4. [Radware Bot Manager](https://www.capterra.jp/software/149999/bot-prevention-solution) — 4.6/5 (24 reviews)
5. [Datadog](https://www.capterra.jp/software/135453/datadog-cloud-monitoring) — 4.6/5 (369 reviews)

## レビュー

### "The best cloud platform for development and DDoS protection" — 5.0/5

> **Ekpono** | *2026年9月21日* | 翻訳、ローカライゼーション | おすすめ評価：10.0/10
> 
> **良いポイント**: I like Cloudflare for their generous free tier ecosystem, I have used them to host my applications for free using Pages and Workers with zero issue. Hosted application I can share online during local development via their Cloudflared turnnel and use their R2 for storage and lastly their free DDoS protection. Cloudflare is the best cloud service provider
> 
> **改善点**: You would need to be a little technical to configure their pages rules/WAF firewall settings but a little youtube video would give you a good source of information. Their UI is so confusing because things are hidden in collapsible tabs.
> 
> They are top tier providers if AWS is too complex and overwhelming. The User Interface needs a slight learning curve and their free plan and performance is unbeatable

-----

### "Cloudflare magic" — 5.0/5

> **Kaushik** | *2026年3月14日* | 食品、飲料 | おすすめ評価：10.0/10
> 
> **良いポイント**: Its allow user to create account easily While Setting up my website with cloudflare I need reliable free hosting company to launch my website. It helps me to save my lot of money as it handles DNS management, Provides free SSL certificate, actually it give me enterprise level security and performance My website is \[sensitive content hidden\]
> 
> **改善点**: The dashboard is overwhelming as it packed with many many advance features, as when I look to manage my basic DNS records standard security learning it with YouTube etc. is very time consuming steep.
> 
> Easy Account setup,I have created my website with lovable.dev it easily integrate with few clicks  and within minustes of Integration my website is launched.No other prompts or demand for fees everything completed with prompts its sheer magic.

-----

### "Charged for hidden subscriptions after account closure — support is unreachable" — 1.0/5

> **Robert** | *2026年9月24日* | 倉庫 | おすすめ評価：0.0/10
> 
> **良いポイント**: The basic DNS and CDN infrastructure performed well and was generally reliable while my account was active.
> 
> **改善点**: The billing system and customer support loop are a complete nightmare. I was being billed for a service ("Advanced Certificate Manager") that was entirely hidden and did not appear in my active subscriptions list. Because I couldn't manage or cancel it, I chose to completely close and delete my account. Despite the account being closed, Cloudflare still charged my Mastercard.&#10;&#10;When I tried to email billing support, I received an automated reply telling me to log into the support portal. Since my account is deleted, logging in is impossible. There is no alternative way for a former customer to reach a human to stop unauthorized charges.
> 
> Extremely frustrating. Because Cloudflare makes it technically impossible to contact them without an active login, I was forced to permanently block my credit card and file a chargeback through my bank just to stop the unauthorized charges. Continuing to bill a deleted account for a ghost subscription—while hiding behind automated "no-reply" emails—is an unacceptable business practice. I strongly advise against giving them your credit card details.

-----

### "A true pillar of the modern web" — 5.0/5

> **Alessandro** | *2026年10月1日* | インターネット | おすすめ評価：10.0/10
> 
> **良いポイント**: Being excited about the ability to use such a powerful tool, even for free, is undoubtedly the ultimate experience in the security field.
> 
> **改善点**: It is an extremely complex system; definitely not suitable for beginners. However, if you strip away the noise and complexity that aren't needed in everyday life, it is usable.
> 
> I have been a user for over 10 years; I have witnessed firsthand the evolution and efficiency of Cloudflare.

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### "Cloudflare is beast in cloud security . Yes I said they are beasts\!" — 5.0/5

> **Daniel R.** | *2025年9月15日* | コンピュータ・ソフトウェア | おすすめ評価：10.0/10
> 
> **良いポイント**: I am BIG on Cybersecurity and Cloudflare is the best. I remember reading an article about how they were able to fend of the largest DDOS attack in history and I am not surprised. For $25 a month I get full domain protection and they have build in ruleset that stop attacks and I am able to use my own rules sets as well. I love all the features. I can even Livestream and have a secure cloud service of my videos with them for just an additional 5-10 dollars per month is
> 
> **改善点**: What I like least is that you can't contact customer support during an attack unless you have the business plan which is $250 per month

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## リンク

- [Capterraで表示する](https://www.capterra.jp/software/155191/cloudflare)

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| de-CH | <https://www.capterra.ch/software/155191/cloudflare> |
| en | <https://www.capterra.com/p/155191/Cloudflare/> |
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| ja | <https://www.capterra.jp/software/155191/cloudflare> |
| ko | <https://www.capterra.co.kr/software/155191/cloudflare> |
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| nl-BE | <https://www.capterra.be/software/155191/cloudflare> |
| pl | <https://www.capterra.pl/software/155191/cloudflare> |
| pt | <https://www.capterra.com.br/software/155191/cloudflare> |
| pt-PT | <https://www.capterra.pt/software/155191/cloudflare> |

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