{"version":"1.0","provider_name":"Glenn Berry","provider_url":"https:\/\/www.sqlskills.com\/blogs\/glenn","title":"Upgrading SQL Server&ndash; Database Experimentation Assistant - Glenn Berry","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"h3QzSAwRqk\"><a href=\"https:\/\/www.sqlskills.com\/blogs\/glenn\/upgrading-sql-server-database-experimentation-assistant\/\">Upgrading SQL Server&ndash; Database Experimentation Assistant<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.sqlskills.com\/blogs\/glenn\/upgrading-sql-server-database-experimentation-assistant\/embed\/#?secret=h3QzSAwRqk\" width=\"600\" height=\"338\" title=\"&#8220;Upgrading SQL Server&ndash; Database Experimentation Assistant&#8221; &#8212; Glenn Berry\" data-secret=\"h3QzSAwRqk\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.sqlskills.com\/blogs\/glenn\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"Another useful, if somewhat complicated, free tool from Microsoft is the Database Experimentation Assistant (DEA). Microsoft released DEA version 2.1 on July 25, 2017, with many new improvements over the earlier preview versions as detailed here. Here is how Microsoft describes the DEA tool: \u201cDatabase Experimentation Assistant (DEA) is a new A\/B testing solution for [&hellip;]"}