Magento 2.0.18 is the final 2.0.x release. After March 2018, Magento 2.0.x will no longer receive security patches, quality fixes, or documentation updates. To maintain your site's performance, security, and PCIPayment Card Industry: Refers to debit and credit cards and their associated businesses. compliance, upgrade to the latest version of Magento.
Advanced Developer Tools
Use the Advanced Developer tools to determine the compilation mode during frontend development, create a whitelist of IP addresses, display template path hints, and make spot changes to text in the interface of the storefront and AdminThe password-protected back office of your store where orders, catalog, content, and configurations are managed..