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The table is a good visualization of Simplicity versus Efficiency. API Simplicity Efficiency Description GlideRecord getReference 1st 5th - 1 line of code - Poor UX (blocks browser) - Returns entire record  GlideRecord 2nd 4rd - ~ 5 lines of code - Poor UX (blocks browser) - Returns entire record GlideRecord getReference (with callback) 3rd 3rd - 5-10 lines of code (with callback) - Best UX (does not block browser) - Returns entire record GlideRecord (with callback) 4th 2nd - ~ 10 lines of code (with callback) - Best UX (does not block browser) - Returns entire record GlideAjax 5th 1st - ~20 lines of code (Client Script + Script Include) - Best UX (does not block browser) - Returns only the data you need Note: Actually I would change "GlideAjax" into "GlideAjax (with getXMLAnswer)". GlideAjax with getXML still would return a whole document. While GlideAjax with getXMLAnswer would only return the exact answer you need. Read about this in one of my previous articles G...

  An LDAP integration allows your instance to use your existing LDAP server as the main source of user data. STEP1: Define LDAP Server Option1: LDAP Server with MID Server This is the most common method as it is the easiest to configure and doesn’t require much effort from a company AD admin. You’ll need to setup a  midserver  to use this method. Please note that you can’t authenticate (login) using this method and you can’t use a SSL connection. For authentication, an  SSO connection  is often configured. So you use the LDAP Integration to pull in users/groups and SSO to authenticate (login). Option2: LDAP Server with VPN For this method, you need to ask ServiceNow for a VPN Request though HI Support. This method isn’t that preferred is that you are relying on the ServiceNow VPN to work and other maintenance concerns. Option3: External IP Address For this method, you expose an external IP Address to ServiceNow. Option4: LDAPS with PKI Certificate Most companies...