SAP AG, a German company produces the enterprise software packages and named their family of solutions as SAP Business Suite. The software giant is head- quartered at Walldorf, Germany and developed the #1 ERP Software package. It provides business solutions as enterprise applications in all areas of business e.g. Financial Accounting, Sales, Distribution, Manufacturing, HR, etc.
The company started its operation in 1972 and currently produces host of business packages including ECC (ERP Central Component), New Dimensional products (BW, CRM, APO, EP, E-Recruiting, etc.), Business One, etc. Read more about "What is SAP?" here.
The SAP story makes one of the very exciting success stories in the business world and if it interests you, you can visit the History of SAP. The success story started with a small private partnership which grew to one of the world's largest independent software providers having presence in over 75 countries. SAP is the largest software company in Europe and the third largest globally.
Also check Introduction to SAP Business Suite. And find SAP definition of terms and its various offerings (Glossary).
SAP is the leading ERP software package. The ERP market saw many software packages in its nascent stage but hardly a handful could prove the test of the time and SAP has emerged as the leader. SAP helps to bring the entire business online and integrate the business processes. It provides end-to-end business solutions which means it covers all the processes involved in that arm of the business (e.g Order to Cash, Purchase to Pay, Manufacture to delivery, etc). It has different modules to implement the business processes - Financial Accounting & Controlling (FI/CO), Materials Management (MM), Sales & Distribution (SD) - to name a few.