yandex

Moving to the cloud or changing providers is always open-heart surgery. An engineer has to solve a lot of issues: how to move terabytes of data with minimal downtime? How to convert the schema? How to set up CDC (Change Data Capture) so as not to lose a single transaction during the switch?

Each major cloud provider has its own answer. Approaches are radically different: some provide just a “pipe” for data, some — a full ETL combine, some make migration serverless and as trouble-free as possible.

Introduction

Email remains one of the key tools for communication and business. Many use paid services like Gmail, Outlook or ProtonMail, but there are those who prefer to set up their own mail server. This gives full control over data but requires time and technical skills.
This article examines the pros and cons of both approaches, risks and practical recommendations. The material will be useful for both beginners interested in privacy and specialists seeking an in-depth analysis. Prices are indicated as of September 2025 and may vary; check current information on providers’ websites.