These two facets of cloud services address two different time frames in the life cycle of a business. Cloud elasticity provisions interim, strategic needs, while cloud scalability provisions enduring, preemptive needs of the businesses.
Cloud elasticity allows businesses to easily fit the resources required to cope up with loads dynamically usually in relation to scale out. On the other hand, Cloud scalability facilitates businesses to meet anticipated demand for services without any requirement for huge and upfront capital investments in infrastructure building and maintenance.
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