AJAX is a technology used to add interactivity to web pages. Often used in partnership with server-side languages such as PHP, it's a common feature on many modern websites.
A CMS, or Content Management System, is an admin area that grants site owners and designated representatives access to a website in order to manage content.
CSS, or Cascading Style Sheets, is a website design language used to control the layout and presentation of web pages. The most revision is CSS3.
A database is a collection of information. The information might be the names and addresses of your clients, or it could be an inventory of your stock or a listing of room rates and availability at a hotel.
HTML, or Hypertext Markup Language, is the core language used for making websites. The current version is HTML5
PHP is a programming language used to manage information on the server. It is often used in conjunction with AJAX to control the appearance and content of web pages.
SEO refers to the techniques used to help websites achieve high rankings in search engines. This website, for example, has been optimized for search terms such as "website designer in Bangkok".
SQL, or Structured Query Language, is a language used for retrieving information from a database. It's usually used in conjunction with other programming languages, such as PHP