An XML sitemap is basically a text file containing a list of your website URLs, and it is meant to allow search engines to consume all meaningful pages of your online portal. XML sitemaps are great for search engine optimization because they help Google (and, surely, other search machines) to quickly find the necessary pages on your web resource even if internal links do not work perfectly (or there are no any at all). In this article, we will speculate on the importance of XML sitemaps and how having one might help you get a higher position on Google. Houston Web Company
You probably already heard about blockchain, bitcoin, cryptocurrencies, and other related terms. Let's clarify first of all what is a difference between Blockchain and Bitcoin, as not everybody may understand it yet. Blockchain is a growing list of records, called blocks, which are linked using cryptography, it's a digital ledger of transactions. Bitcoin is a cryptocurrency, a form of electronic cash. It is a decentralized digital currency without a central bank or single administrator that can be sent from user to user on the peer-to-peer Bitcoin network without the need for intermediaries. Bitcoin is built on the blockchain, there are a lot of other cryptocurrencies, but Bitcoin is the most famous and as far the most popular.
Page speed is "page load time" that takes to display the whole content on a web page or "time to the first byte" (time of receiving the first byte of information from the web server by your browser). To check your Page Speed you can use Google's tool that calls Google's PageSpeed Insights.