Internet sites like ebay (the giant online auction site) and ivillage (an online community for women) can be used by firms to build communities of users—like-minded customers who want to share their experiences. this builds customer loyalty and enjoyment and develops unique ties to customers.
this scenario is an example of how information systems businesses use to achieve competitive advantage.

technology strategy

Explanation:

technology strategy is a form of strategy information system designed to give competitive advantage to businesses. With the increasing rate in the use of (IT) information technology, the more substitute products and services in your industry, the less you can control pricing.

Information systems help businesses use network based strategies

Explanation: The information systems and networks are of great benefits especially as it regards building network of persons and business, through information systems businesses can build brands that can last the test of time,penetrate new markets and gain brand loyalty and competitiveness. International Businesses enjoy the impact of information systems especially through commercial,social media,Television and radio,mobile communication systems etc.

well cos like a ds it doesn't really die out, unlike for example, fifa, they always come out with a new version, so lets say your fifa 18 is charging you to update the teams and stuff, so, if messi were to go to real madrid (never gonna happen) it would switch messi to the other team, until the owners of fifa come out with fifa 19, then the game would eventually stop updating, and back to the ds, it doesn't really stop working after sometime because there's lots of things that it could be used for, and idk if u know what i'm saying, but long story short, samsung, represents the ds, if they still work, and people love them but not the new version, the old version still works, so they don't really force people to buy new phones, get me?