Amazon Lightsail is a fully managed cloud platform offered by Amazon Web Services (AWS) that provides developers with an easy-to-use cloud computing platform for deploying and managing applications. Lightsail is designed for developers who want a simple and easy-to-use platform for building and running applications, without the complexity and cost of managing infrastructure. 

With Lightsail, you can launch virtual private servers (VPS), also known as instances, with just a few clicks. Lightsail provides a range of instance types and sizes to choose from, so you can find the right balance of resources for your application. You can also easily attach persistent storage to your instances, such as SSD-based storage or block storage. 

Lightsail also provides a range of services that you can use to build and run your applications, such as databases, load balancers, and networking services. You can easily connect your Lightsail instances to these services using the Lightsail console or APIs.
Lightsail is a cost-effective and easy-to-use platform for deploying and managing applications in the cloud. It is particularly well suited for small and medium-sized businesses, startups, and developers who want to get started with cloud computing without the complexity and cost of managing infrastructure. 

Here is a step-by-step tutorial on how to use Amazon Lightsail to launch and manage a virtual private server (VPS): 

1. Sign in to the AWS Management Console and navigate to the Lightsail console. 2. Click on the "Create instance" button. 
3. Choose the region where you want to launch your instance. 
4. Choose the operating system and the instance type that you want to use. You can choose from a variety of popular operating systems, such as Linux or Windows, and a range of instance types with different configurations of CPU, memory, and storage. 
5. Give your instance a name and a hostname. 
6. Choose a bundle plan that includes the resources you need for your application, such as CPU, memory, and storage. 
7. Click on the "Create instance" button to launch your instance. 
8. Wait for your instance to be created. This may take a few minutes. 9. Once your instance is created, you can connect to it using Secure Shell (SSH) or Remote Desktop Protocol (RDP). You can find the connection details in the Lightsail console, under the "Connect" tab. 
10.You can also manage your instance using the Lightsail console. From the console, you can start, stop, and restart your instance, attach persistent storage, and view resource usage and performance metrics.

That's it! You now have a fully-managed VPS running on Lightsail. You can use it to host your applications, run your code, or store and process data.