Cloud computing is a shift in how we access and use technology.Cloud platforms are changing the game for businesses of all sizes.The cloud offers real benefits such as flexibility and cost-effectiveness.SaaS provides ready-to-use software accessible via the Internet.PaaS streamlines app development and deployment in the cloud era.IaaS is like renting a plot of land and construction materials.Choosing between SaaS, PaaS, and IaaS depends on business needs and expertise.There are four main cloud deployment models: public, private, hybrid, and community.Security, cost, performance, and customization are critical factors in choosing a cloud model.ISVs enhance SaaS offerings by building domain-specific applications.