Cloud Computing is the idea or concept of accessing scalable (capable of being expanded) technology-based services using the Internet instead of a personal computer or office server. Some of the early movers of cloud computing include Salesforce.com which pioneered the idea of ​​delivering applications through a simple website, Amazon with its Amazon Web Service, and Google Docs. Decades ago, most companies used a centralized computing model that usually included supercomputers where all the software, storage devices, and other things were included. But due to the very high cost, typically running up to millions of dollars, the demand for less expensive but more powerful microprocessors increased in the 1980s. This, through phases including grid computing and utility computing, Application Service Provider (ASP), and Software as a Service (SaaS), ultimately led to the evolution of cloud computing. server models to Internet-based computing, the concept called grid computing was introduced. It was born with the idea of ​​making computer power as accessible as an electrical grid. Grid computing eventually made the collaboration of different organizations possible as it is composed of networked and loosely coupled computers that work together to carry out large-scale tasks. It is then supported by the computing utility that allows people to rent computing services such as Internet access. Then, in the late 1990s, the Application Service Provider (ASP) came into play and allowed companies to outsource their IT needs, such as software and servers, saving... half the paper... problem more great in terms of productivity. Many businesses find cloud computing very convenient and efficient in terms of time, money and even energy. Thanks to this, it has become very popular especially among companies. However, for every transaction, companies should always be cautious. Before making any decision or providing any information, you always need to take many things into consideration. That's when communication between customer and supplier plays an important role. Businesses should first make sure that the services offered by cloud service providers are truly beneficial for them. They should also ask vendors what their backup plans are in case something goes wrong regarding outages, security and data mobility. Ultimately, it still depends on businesses how they can make the most of cloud computing.