为云计算构建基础设施占全球所有 IT 支出的近三分之一。云计算在 IT 领域发挥着重要作用，然而，另一方面，如今组织开始大规模使用 Hadoop 来存储和执行对不断增加的数据大小的操作。
云计算：
通过互联网提供的存储、网络、数据库、服务器等计算服务被称为云计算。它被广泛使用，因为它为组织节省了硬件成本，使用最新技术更加安全，发送方和接收方通信所需的时间更少，即减少了网络延迟。云数据备份将由云提供商完成，用户可以从任何地方使用 Internet 访问。
三种不同的云计算架构是：
- 公共云– 由第三方云提供商运营，例如谷歌云。
- 私有云——计算资源由单个组织用于满足其业务需求。
- 混合云——公共云和私有云功能的结合。
Hadoop：
Hadoop 是一种软件框架，允许用户在分布式环境中处理大型数据集。根据数据集的大小，计算机以分布式文件系统 (DFS) 方式集群。在 Hadoop 分布式文件系统 (HDFS) 中，每个文件都被分成大小相等的块，复制三次并随机存储在数据节点中。许多组织开始使用 Hadoop 作为他们的数据仓库，因为它可以处理不同格式的数据。
下面是云计算和Hadoop之间的区别表：
| S.No. | Cloud Computing | Hadoop | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Data is stored on cloud servers situated at different locations. | Large data is processed and stored as volumes of data in a HDFS environment. | ||||||||||||
| 2 | Constitutes complex computer concepts, involves large number of computers which are connected in real time. | It is a framework with simple programming models to process data. | ||||||||||||
| 3 | Data is stored and processed in remote servers up next accessed from any preferred location. | The processed data yields new patterns hidden in the data. | ||||||||||||
| 4 | Requires low maintenance, backup and recovery of data is available. | Need more maintenance when compared and difficult to retrieve lost data. | 5 | Internet is used to provide cloud based services. | Distributed computing is used for processing the data. | 6 | On demand services are provided by cloud platforms. | Different formats of data is being processed and analysed. | 7 | Computing behaviour like Performance, scalability are analysed. | Processed data will be analysed and stored. | 8 | No need to purchase expensive hardware . | Business organizers can apply the predicted outcomes of the processed data in their businesses. |