Wi-Fi 5 is still alive and is widely used in company networks.
In my experience:
1. In most companies, wireless infrastructure is now the most critical.
2. Many companies manage wireless infrastructure (controllers, access points), replace devices, update software, optimize frequency/channels etc.
3. But they do not manage endpoint devices (mainly laptops) – different hardware vendors, different OS (Windows) versions, wireless card driver updates.
4. It doesn’t matter what architecture (local/central switching) we have, traffic will always pass through the wired infrastructure LAN/WAN/IPSec/MPLS/ISP links. Bottlenecks in these areas are key.
The latest report from Cisco about Wi-Fi mentions, for example, an increasing trend of attacks on Wi-Fi infrastructure (using AI) and an interesting fact – today specialization in AI is very popular, not Wi-Fi. However, old problems related to wired and wireless infrastructure do not disappear.
Download the latest report from Cisco: https://www.cisco.com/site/us/en/products/networking/wireless/state-of-wireless-report/index.html