Secure Socket Layer (SSL) is a protocol that encrypts personal data used in the recruiting process. SSL ensures that the data transmitted between the candidate's browser and the career site is secure and protected from unauthorized access or tampering1. SSL also helps to improve the candidate's trust and confidence in the career site and the recruiting process2.
References:
SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 2: Site Setup, Lesson:
Configuring SSL, Slide 4
SAP SuccessFactors Recruiting: Candidate Experience Academy, Unit 2: Site Setup, Lesson:
Configuring SSL, Slide 5
SAP SuccessFactors Recruiting: Candidate Experience 2H/2023, Topic Areas: Site Setup <= 10%

In Command Center, the following filters are available when you search for a site:
Career Site URL: This filter allows you to search for a site by its URL, which is the web address that candidates use to access the site1.
Recruiting Management Data Center: This filter allows you to search for a site by its data center, which is the physical location where the site's data is stored and processed2.
Recruiting Management Company ID: This filter allows you to search for a site by its company ID, which is the unique identifier that SAP assigns to each customer instance3.
The other options are not valid filters for searching for a site in Command Center:
Single Sign-On Security Key: This is not a filter, but a setting that enables single sign-on (SSO) for a site, which is a feature that allows candidates to log in to the site using their existing credentials from another system4.
Manage API Credentials: This is not a filter, but a setting that allows you to manage the API credentials for a site, which are the keys that enable the site to communicate with external systems using application programming interfaces (APIs).
References: 1: SAP Help Portal - Career Site URL 2: SAP Help Portal - Recruiting Management Data Center
3: SAP Help Portal - Recruiting Management Company ID 4: SAP Help Portal - Single Sign-On Security Key
4: [SAP Help Portal - Manage API Credentials]

After a Career Site Builder site is moved from stage to production, the site URLs need to be checked to ensure that they are pointing to the correct environment and domain. The site kit selection, map settings, and external redirects are not affected by the move to production and do not need to be checked. References: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 6: Move to Production, Lesson: Move to Production, Slide 8.