A VPN is not always required, but it provides privacy and can bypass ISP throttling or geo-blocks. Use a reputable paid VPN with fast servers, low latency, and streaming-optimized routes (avoid free VPNs — they are often slow and log data). Key features to look for: AES-256 encryption, no-logs policy, nearby server locations, good DNS leak protection, and WireGuard or OpenVPN support. Many Glanfy-friendly providers publish integration tips; for best results test multiple servers and measure latency before subscribing.