This document provides an overview of PayPal including its history, issues it has faced, and solutions implemented. PayPal was founded in 1998 and acquired by eBay in 2002. It faced the challenge of international expansion being hindered by language and currency barriers. PayPal overcame this by rearchitecting its software with an internal solution called SimShip to automatically recognize location and support multiple languages and currencies simultaneously. PayPal has also addressed security vulnerabilities like phishing scams and issues within its mobile app and backend systems by promptly implementing patches and updates. It is now a leader in the online payments industry with over 190 markets and customer trust in its service.