Enabling policy enforcement across the software development life cycle is going to involve a number of steps and best practices.
Since you're asking about enforcing your policies, you have hopefully already defined them, but it's a good idea to have policies in place for security, compliance, coding standards and code quality (subjective, I know). The following may seem obvious, but it's also important to make sure everyone is aware of and understands the policies and, hopefully, what the goal is of each one. Also, make sure they have easy access to your policies for reference. And, of course, it's important to train your team on coding standards and security best practices.
Once you have defined your policies, you need to integrate them into your processes. This will likely involve creating workflows that include policy checks at key stages in the SDLC, such as code reviews, testing, and deployment.
To get to your specific question, with all that in place, you want to look at ways to enforce policies consistently and efficiently. For pretty much any organization beyond a small start-up (and maybe even for a start-up as well) this step is going to require tools designed to automate enforcement. Depending on your situation they could include tools that automatically scan code for security vulnerabilities, detect policy violations, and provide feedback to developers in real time (ideally).
The tools should also monitor and measure compliance (so that you hopefully see improvement in compliance over time). These tools should track and report on policy violations and, possibly, audit logs to help identify areas for improvement.
Application security is a significant challenge for software engineers, as well as for security and DevOps professionals. It comprises the measures taken to improve the security of online services and websites against malicious attacks by finding, repairing, and preventing security weaknesses and vulnerabilities.
Enabling policy enforcement across the software development life cycle is going to involve a number of steps and best practices.
Since you're asking about enforcing your policies, you have hopefully already defined them, but it's a good idea to have policies in place for security, compliance, coding standards and code quality (subjective, I know). The following may seem obvious, but it's also important to make sure everyone is aware of and understands the policies and, hopefully, what the goal is of each one. Also, make sure they have easy access to your policies for reference. And, of course, it's important to train your team on coding standards and security best practices.
Once you have defined your policies, you need to integrate them into your processes. This will likely involve creating workflows that include policy checks at key stages in the SDLC, such as code reviews, testing, and deployment.
To get to your specific question, with all that in place, you want to look at ways to enforce policies consistently and efficiently. For pretty much any organization beyond a small start-up (and maybe even for a start-up as well) this step is going to require tools designed to automate enforcement. Depending on your situation they could include tools that automatically scan code for security vulnerabilities, detect policy violations, and provide feedback to developers in real time (ideally).
The tools should also monitor and measure compliance (so that you hopefully see improvement in compliance over time). These tools should track and report on policy violations and, possibly, audit logs to help identify areas for improvement.