The phenomenon of large-scale layoffs and recruitment by major Internet companies is mainly due to the following reasons:

1. Transformation and upgrading: With changes in technology and market, major Internet companies Business structure and strategic positioning need to be constantly adjusted to adapt to new market demands. During this process, it may be necessary to lay off some personnel who are no longer applicable to the business, and at the same time, recruit more personnel who understand new technologies and new businesses to promote the transformation and upgrading of the enterprise.

2. Survival of the fittest: Competition in the Internet industry is fierce. Only by maintaining innovation and leadership can we remain invincible in the market. Therefore, major Internet companies need to survive and eliminate the fittest through layoffs and recruitment to retain the best talents to enhance the competitiveness of the company.

3. Cost control: Large Internet companies may expand their recruitment scale in the early stages of development, but as the company matures and develops, cost control will become more and more important. In this process, it may be necessary to lay off some redundant personnel and recruit more personnel with multiple skills to improve efficiency and reduce costs.

4. Talent mobility: The Internet industry has high talent mobility, and some personnel may leave the company for various reasons, causing the company to need to recruit. At the same time, some outstanding talents may also be poached by other companies, causing companies to need to conduct more recruitment and training.

In general, it is a common phenomenon in the industry for major Internet companies to lay off employees on a large scale while recruiting at the same time. Decisions need to be made based on specific circumstances and market demand. Enterprises need to comprehensively consider various factors to achieve long-term development and sustainable growth of the enterprise.