Have you used any clouds? Yandex, Google, AWS, or other cloud services?

Yes, I have used various cloud services, including AWS and Google Cloud Platform. For example, in AWS, I worked with EC2 for server deployment, S3 for data storage, and Lambda for serverless functions. In Google Cloud, I used Compute Engine and Cloud Storage. Cloud services allow for quick scaling of applications, managing infrastructure, and utilizing ready-made services for analytics, databases, and machine learning.