From a feature perspective, I have not experienced any issues, drawbacks, or shortcomings. However, the cost of Cisco's products and licensing is high. My clients usually prefer cheaper options if possible. Mid-size or smaller businesses typically cannot afford Cisco Secure Access. Additionally, there is a steep learning curve, as it is very intensive. Someone with significant knowledge can work on it, but a new professional would have to spend considerable time to get accustomed to it. It is hard to find engineers who can work on it. Overall, we get what we pay for, as it is a pretty good feature and service. The pricing of Cisco's products and licensing is higher than competitors. If they could be more reasonable, that would help. The support offered for two years also has higher costs. Overall, the client's IT budget gets affected. It was challenging to learn because, as mentioned, it has a significant learning curve and requires considerable training to become proficient.
