The "Account Onboarding & Registration service" on e-commerce portals for sellers is a pivotal gateway to accessing a vast online marketplace. Through this service, sellers can easily create accounts and onboard their businesses onto the platform's ecosystem. The process typically involves providing essential business information, verifying identity and credentials, and setting up payment and shipping details. E-commerce portals often offer step-by-step guidance and support throughout the registration process, ensuring that sellers can navigate the platform with ease. Once onboarded, sellers gain access to a range of powerful tools and resources to manage their inventory, optimize product listings, and track sales performance. This service not only facilitates the expansion of businesses into the digital realm but also opens up opportunities for reaching a broader audience and maximizing sales potential in the ever-growing e-commerce landscape.