# Problems solved by the Cloud

* **Flexibility:** change resource types when needed
* **Cost-Effectiveness:** pay as you go, for what you use
* **Scalability:** accommodate larger loads by making hardware stronger or adding additional nodes
* **Elasticity:** ability to scale out and scale in when needed
* **High-availability and fault-tolerance:** build across data centers
* **Agility:** rapidly develop, test, and launch software applications