The speed of developing any application will yields results only when the deployment of the application is also done at a greater speed. If deployment over cloud platforms take longer, your release windows and downtime dramatically increases. This causes discomfort to customers.
Today dev team, ops team and the testing team must work in tandem to efficiently deliver products. Upgrades need to happen seamlessly. At the same time, no regression issue is encouraged.
The only way to achieve this is thru Continuous Integration and Test Automation.