While I do a lot of development, I don't classify myself as a true developer. I can program and move stuff around on a page and make it work. A true developer understands how to develop the code so that it can be scaled, not take up a lot of resources, load quickly, be easily modified later and still work.
La situación difícil en la que se encuentran los especialistas en marketing es tener una sitio web muy rápido y aún incorporar integraciones y elementos sociales que pueden crear dependencias sobre la rapidez con la que se cargará su sitio. Un ejemplo es botones sociales. On Martech, we have social buttons on every single page on the site. So… if Facebook resources load slow one day, it slows down our site. Then add Twitter, Pinterest, Buffer, etc. to that and your site's chances of loading fast are reduced to virtually nothing.
That's known as synchronous loading. You have to finish loading one element antes you load the next element. If your able to load items asynchronously, you're able to load items without a dependency on one another. You can drastically improve your site's speed by loading elements asynchronously. The problem is that the out-of-the-box scripts that these companies provide you is almost never optimized to run asynchronous.
You can see what's impacting your page speed by running a test on Pingdom:
Here's a snippet of how to do it properly from Emil Stenström: