In the decision to build or buy software solutions, engineering teams must carefully evaluate several factors such as user experience, cost, scalability, and organizational needs before committing to a purchase or development. While buying often appears to be the faster and less resource-intensive option, particularly when a solution is readily available that fits the problem's scope, building may become necessary if no off-the-shelf product meets the specific requirements, especially in cases of large-scale applications like those at Netflix or Google. Teams are encouraged to engage with stakeholders, utilize free trials, and consider open-source alternatives to manage costs effectively. Historical trends suggest outsourcing software problems often proves successful in startups, allowing companies to focus on core competencies. Additionally, maintaining in-house solutions can be resource-intensive, requiring significant staffing and infrastructure, which must be weighed against the benefits of external solutions. Ultimately, the decision should be informed by thorough research and alignment with the organization's long-term goals.