Let's Encrypt vs Pulse Secure: What are the differences?

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### Introduction

1. **Certificate Authority**: Let's Encrypt is a non-profit certificate authority that provides free SSL/TLS certificates, while Pulse Secure is a commercial provider of secure access solutions.
2. **Automated Certificate Management**: Let's Encrypt relies on automated certificate management using ACME protocol, making it easier to obtain and renew certificates, whereas Pulse Secure utilizes traditional certificate management processes.
3. **Cost**: Let's Encrypt certificates are free of charge, catering to those with cost constraints, while Pulse Secure certificates are commercial and require a paid subscription.
4. **Target Audience**: Let's Encrypt is more geared towards individuals and small businesses looking for cost-effective encryption solutions, whereas Pulse Secure is aimed at enterprises and organizations with more complex security requirements.
5. **Domain Validation**: Let's Encrypt offers automated domain validation, streamlining the certificate issuance process, whereas Pulse Secure may require manual validation steps depending on the organization's security policies.
6. **Support and Service Level Agreements**: Pulse Secure typically provides higher levels of support and customizable service level agreements compared to Let's Encrypt, which relies more on community support and standard service offerings.

In Summary, Let's Encrypt is a non-profit, free certificate authority catering to individuals and small businesses, while Pulse Secure is a commercial provider aimed at enterprises with more advanced security needs. Let's Encrypt provides automated certificate management and domain validation, whereas Pulse Secure offers traditional processes with potentially higher levels of support and customization.