There is no single answer to this question, as the key tools a medium-sized business needs for growth will vary depending on the specific needs of the company. However, here are some common tools that can help many medium-sized businesses grow:

Customer Relationship Management (CRM) software: A CRM system can help a business manage its interactions with customers and prospects and provide valuable insights into customer behavior and preferences.

Marketing Automation Software: Marketing automation tools can help businesses streamline and automate their marketing efforts, making it easier to target and engage with the right customers.

Accounting and Financial Management Software: An accounting and financial management system can help businesses keep track of their financial performance and make informed decisions about how to allocate resources and grow.

Project Management Software: Project management tools can help businesses manage multiple projects and team members, and ensure that projects are completed on time and within budget.

Human Resources Management Software: Human resources management systems can help businesses manage their employees, from recruitment and onboarding to performance management and employee development.

Supply Chain Management Software: Supply chain management systems can help businesses manage their supply chain, from sourcing and procurement to order fulfillment and delivery.

Data Analytics Tools: Data analytics tools can help businesses collect, process, and analyze data to gain valuable insights into their operations and customers.

These are just a few examples of the tools that a medium-sized business might need for growth. The specific tools that a business needs will depend on its size, industry, and goals, but having these systems in place can help a business streamline its operations, better understand its customers and market, and make informed decisions that drive growth.