When would you use 303 redirect? I often use 301, sometimes 302, but I have never used 303. What's the use case for it?

I need some help and guidance regarding Hreflang tag. We are working on a website, say example.com. We are planning to launch the same website in the german language wit...

I see this quiet often in SEO discussions, blog posts, etc. Soft 404 error But what does that really mean? Is there an hard 404 too? How are these different?

Is Let's Encrypt certificate equally good for SEO as any other certificate money could buy? I am about to launch my new website, but I am still not decided whether should...

I am curious, how big is the difference between keyword rich URL/URI and one made up from random sequence of characters, like product number/code. Does it matter enough,...