1. IT Infrastructure Is Undergoing Drastic Change Traditional enterprises are building more efficient business models on top of internet technology to strengthen their competitiveness in their industries. Lower R&D costs, faster product iteration, closer proximity to customers, better service quality… This whole set of changes will push the productivity and living standards of society as a whole onto a new level.

1. About PaaS 1.1 What Is PaaS PaaS is short for Platform as a Service, a type of cloud computing service that provides a computing platform along with solution services. The emergence of PaaS accelerated the growth of SaaS, and in particular sped up the development of SaaS applications. For example, when developing SaaS, using the login, database, cache, and other services uniformly provided by a PaaS platform greatly reduces the manpower and cost of building those services.

1. User Scenarios for Hybrid Cloud 1.1 Handling Explosive Business Growth Internet businesses grow exponentially, and it is hard to predict how much infrastructure capacity to reserve. Usually, for a long stretch in the early days of a business, a small colocation footprint of physical machines is enough to meet demand.

1. Classification of Cloud Services IaaS, which provides computing and storage services. PaaS, which provides the platform environment in which software runs. SaaS, which delivers software services directly. 2. Application Scenarios for Cloud Services Adopting cloud services can significantly reduce IT spending. Among IaaS services, cloud hosts and storage are the products with the highest adoption rates, followed by databases and network acceleration.

1. Work Scenario The team I am on has 20+ people and carries the responsibilities of both PaaS and SaaS development. The people who develop PaaS, the PaaSer, are mainly responsible for developing and maintaining the PaaS platform, with the goal of providing the SaaS developers with the APIs and documentation they need.