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COThis is a very common beginner SDE interview question.
HTTP vs HTTPS — what’s the difference?
1️⃣ HTTP = normal communication
Data is sent in plain text.
Anyone in between can read it.
2️⃣ HTTPS = secure communication
Data is encrypted using SSL/TLS.
Even if intercepted, it cannot be understood.
3️⃣ Security is the key upgrade
Passwords, cards, tokens →
must travel via HTTPS.
4️⃣ HTTPS verifies identity
Certificates confirm
you are talking to the real server.
5️⃣ Performance difference?
Modern HTTPS is almost as fast as HTTP.
Security is worth it.
🎯 Interview takeaway
HTTP = open message.
HTTPS = locked message.
Always use HTTPS in production.
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