IATA is the trade association of the global airline / aviation industry. IATA (International Air Transport Association) software is a term used for custom travel software platform connected with leading GDS systems.
IATA NDC - New Distribution Capability is a travel & hospitality industry-supported program launched by IATA for the development, growth and adoption of new XML-based data transmission standard, which is called NDC standards today. This was started in 2012 by IATA to replace the old EDIFACT, which global distribution systems rely on. EDIFACT can only display information such as fares and schedules and needed an upgrade to meet the new global standards.
PCC actually stands for Pseudo City Code and is a GDS code, used to identify the location of a travel company. It is a short (usually 3-5 characters long) alpha-numeric (or combination of both) code and it's unique for each and every agency. A PCC code is important to insert negotiated rates as these can be defined/ secured to an agency by using their code.
One of key prerequisites of travel GDS integration on your website is IATA accreditation (or ARC, if you are in United States). If you are an IATA agent, you can apply for any of top GDS systems like Amadeus, Travelport or Sabre. Once you receive your test credentials, hire a professional travel portal development company to integrate the GDS web services on your booking platform. Once the integration is done, you can proceed for live certification to make it live.