In the dawn of a new business era, the importance of collaborative intelligence, bolstered by technology, has never been more potent. The concept of Intelligence Augmentation (IA), a paradigm shift from merely artificial intelligence (AI), is the harmonic interplay between human and machine intelligence. IA amplifies the innate capabilities of human intellect with the computational prowess of AI — a concept often likened to the efficiency and unity within a hive mind.

The scope of IA goes beyond improving efficiency and productivity. It paves the way for sustainable business practices through optimization of operations, reduction of waste, and by significantly contributing to environmental and social goals. From powering green initiatives like smart grids to fostering sustainable urban development, IA is at the forefront of a transformative wave in business operations and ethics.

Mounting stakeholder pressures mandate businesses to align their sustainability efforts with organizational values. IA, with its ability to interpret vast data reserves, can provide valuable insights into market trends, customer behavior, and potential sustainability initiatives. Clear metrics and reporting foster transparency and accountability, crucial elements of a robust sustainability strategy.

Employee engagement is a crucial pillar supporting the weight of an organization's success. With its power to foster creativity and innovation, IA can redefine the employee experience. The intertwining of AI in HR and internal communications has proven successful in improving employee satisfaction and engagement. Virtual assistants, real-time feedback, personalized learning paths — the possibilities are endless and thrilling!

Implementing AI in business is not without its challenges. Limited AI skills, data complexity, and ethical concerns are potential obstacles that require due attention. Addressing these issues head-on with a commitment to upskilling the workforce and maintaining ethical AI practices is a step towards sustainable business practices.

With a substantial adoption rate, enterprises are increasingly becoming comfortable with AI. The trust factor plays a significant role in employee openness towards AI-enabled technologies. But with that trust comes the responsibility of ethical AI deployment, emphasizing transparency, equity, and privacy.

The AI umbrella spans a wide range of technologies, including Machine Learning, Natural Language Processing, Computer Vision, and Robotic Process Automation. These technologies are not only transforming workplaces but also impacting business models and practices. They are heralding an era of exponential growth and innovation, reshaping the future of work.

Several organizations such as CSU Stanislaus and Standard Textile have reaped the benefits of AI in enhancing employee engagement. Platforms like Cerkl's AI-powered solution have helped improve communication and engagement, serving as beacons of successful AI integration in internal communications.

Creating a sustainable future requires innovation, adaptability, and a keen eye on ethical considerations. Collaborative intelligence offers a medium to achieve sustainability goals while driving business growth and employee engagement. Embracing this hive-mind culture nurtures a collective intelligence environment, fostering a healthy blend of human and AI capabilities.

In conclusion, as we navigate the uncharted waters of the digital age, the power of collaborative intelligence will be instrumental in guiding the shift towards sustainable, efficient, and ethically sound business practices. The hive mind is here - are you ready to be part of it?