Google’s Professional Cloud Architect (PCA) certification exam is difficult according to the industry insiders and test-takers, as they all have the same sayings that to answer the questions asked in Google certification exam, you need to have a little more experience in working with GCP and it requires you to have a solid experience. While comparing it with AWS, both do test skills of the candidates based on scenario-based questions, but GCP’s exam focus a little more out on Google, that is it majorly requires candidates to have a developer background. For example, GCP sometimes asks the question that is no way related to google, but GCP thinks it's important to have that particular knowledge, while AWS does the same things but slightly less than how GCP frames the question.
If you wish to know more about GCP and want to be trained in it, I would suggest you check out the GCP certification course from Intellipaat. Also, I would like you to watch our YouTube video on Google Cloud Training from our subject-matter experts to get started.