1) Big Bazaar has used the tetra threat framework for sustainability analysis which examines four threats: imitation, substitution, holdup, and slack.
2) Big Bazaar has achieved competitive advantage through lower costs from economies of scale, building strong supplier relationships, and continuously upgrading its capabilities.
3) Big Bazaar addresses the threat of substitution by launching multiple new retail formats to meet various customer needs. It has also developed in-house brands to reduce dependency on suppliers.