Public, private, and hybrid cloud
An overview of the main models and the criteria useful for choosing the one best suited to public administrations.
Choosing the cloud means adopting a more flexible and measurable model for managing digital services compared to traditional data centers.
For public administrations, this means greater control over costs and performance, simpler updates, security designed with common rules, and more stable service quality, in line with the Cloud Italia Strategy Opens in a new tab and the Cloud First principle.
Migrating to the cloud Go to page is a good choice when scalability and continuity are required during usage peaks, when updates are frequent or complex to manage internally, or when integration with other services and databases is needed.
It is also useful for improving cost visibility and spending control, or when multiple providers collaborate on the same service and isolated, traceable environments are required.
The benefits of the cloud cover technical, organizational, and financial areas. Not all benefits have the same impact, as they depend on the chosen service model, the characteristics of the applications, and the specific context of the organization.
Initial investments in hardware and data center management costs are reduced. Spending becomes tied to actual usage and remains visible for each service. Monitoring tools and alerts help identify unused resources and more accurately estimate the size of the infrastructure, thus avoiding waste.
Computing power, storage, and bandwidth adapt to current needs. During usage peaks (such as calls for applications, registrations, deadlines), resources automatically scale up, without having to maintain unused capacity for most of the year.
Those who choose the SaaS (Software as a Service) model also entrust the provider with application updates. With PaaS (Platform as a Service) and IaaS (Infrastructure as a Service), the organization focuses on applications and access, while the provider keeps platforms and infrastructure updated. This reduces the internal operational workload and speeds up the release of new features.
Automation and rapid resource activation reduce the time spent on repetitive server, storage, and network configurations. Errors decrease and the time needed to deploy new services is shortened.
Qualified services include regular audits and certifications. Features are available for encryption, auditing, backup, and disaster recovery.
Modern architectures and APIs (Application Programming Interfaces) make it easier to integrate different systems, improve availability and response times, and allow for the development of new digital services that are more stable and accessible for citizens.
With the cloud, the organization moves from owning hardware to using services provided by third parties. This shift requires a change in organizational model and responsibilities, based on the principle of shared responsibility, which demands different skills and roles compared to traditional IT.
In the cloud, security and operational management are based on a shared responsibility model between the provider and the customer. The provider is responsible for the security of the cloud infrastructure, while the organization remains responsible for security in the cloud, including configurations, access, data, and applications. This model varies depending on the service used, such as SaaS (Software as a Service), PaaS (Platform as a Service), or IaaS (Infrastructure as a Service).
Adopting the cloud requires clearly defining roles and responsibilities among the administration, suppliers, and cloud providers, as well as setting and monitoring SLAs (Service Level Agreements) and KPIs (Key Performance Indicators). Availability, response times, incident management, and perceived quality become central elements of governance.
It is necessary to manage identities and access through IAM (Identity and Access Management) systems, separate test and production environments, and set security policies and spending limits consistent with the organization.
In the cloud, backup and disaster recovery must be planned and regularly tested to ensure their effectiveness and service continuity, even in case of incidents or malfunctions.
Adopting the cloud means assessing the risk of dependence on a single provider. A good practice is to favor open standards and portable architectures, which make it easier to switch providers or bring services back in-house.
Read also: What is lock-in and how can it be avoided
Not necessarily. The cloud uses a pay-as-you-go model: costs depend on the administration’s usage and service configurations. Savings can be achieved by monitoring consumption, turning off unused resources, proper sizing, and budget rules defined by the organization.
Responsibility is shared. Qualified providers guarantee infrastructure and services according to common requirements. The administration defines the requirements, manages identities and access, handles configurations, and periodically checks security and continuity levels.
Measurable objectives, budgets and alert thresholds, regular reporting, and configuration reviews are needed. Monitoring is continuous and supports the ongoing evolution of services.
An overview of the main models and the criteria useful for choosing the one best suited to public administrations.
A clear overview of methods and criteria for choosing the most appropriate approach.
How to optimize cloud usage and monitor costs, consumption, and operational responsibilities over time.
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