Magento Open Source VS Magento Commerce full features list

Open source vs Commerce
FeaturesOpen SourceMagento Commerce
Integrated Checkout, Payment, and Shipping
Mobile Optimized Shopping
Global Selling
Catalog Management
Extended Functionality via App Marketplace
Instant Purchase
Site Search
Business Intelligence Dashboards
B2B Functionality
Advanced Marketing Tools
Content Staging and Preview
Customer Loyalty Tools
WYSIWYG Page Builder
Visual Merchandising
Product Recommendations
Customer Segmentation
Magento Hosted Cloud
FeaturesOpen SourceMagento Commerce
Optimized Cloud Commerce for Magento
Global Availability
Cloud availability SLA up to 99.99%
Fast Page Loading with Content Delivery Network (CDN)
Performance Monitoring Tools
Enhanced Security with Fastly WAF and DDoS services
PCI Compliant
Easy deployment
Streamlined updates and testing
Technical Support
FeaturesOpen SourceMagento Commerce
Customer Success Manager
Customer Engineering Technical Support
Access to quick-build Express Packages

Magento 2 to Adobe Magento – Certificate Name change list

Magento 2 - Professional Front End Developer
Old: Front End Developer
New: Adobe Certified Expert – Magento Commerce Front-End Developer

Magento 2 - Associate Developer
Old: Associate Developer
New: Adobe Certified Professional – Magento Commerce Developer

Magento 2 - Professional JavaScript Developer
Old: JavaScript Developer
New: Adobe Certified Expert – Magento Commerce JavaScript Developer

Magento 2 - Professional Developer
Old: Professional Developer
New: Adobe Certified Expert – Magento Commerce Developer

Magento 2 - Professional Developer Plus
Old: Professional Developer Plus
New: Adobe Certified Master – Magento Commerce Architect

Magento 2 - Solution Specialist
Old: Solution Specialist
New: Adobe Certified Expert – Magento Commerce Business Practitioner


Cloud Developer
Old: Cloud Developer
New: Adobe Certified Expert – Magento Commerce Cloud Developer

Order Management
Old: Order Management
New: Adobe Certified Expert – Magento Commerce Order Management Developer

Certification path:
https://learning.adobe.com/content/dam/adls/adls-documents/ADLS_Learning_Paths.pdf#page=18

What’s New in Magento 2.4?

Security enhancements : 

  •      Two-factor authentication (2FA) is now enabled by default for the Magento Admin.
  •      Template filter strict mode is now enabled by default.
  •      Data rendering for UI data providers is now disabled by default.
  •      New \Magento\Framework\Escaper class
  •      Support for new security.txt file

Platform upgrades

  • PHP 7.4 support introduced and PHP 7.1 and 7.2 deprecated
  • Support for PHPUnit 9.x and deprecation of PHPUnit 6.5
  • Elasticsearch 7.6.x support
  • MySQL 8.0 support
  • Removal of the MySQL catalog search engine
  • MariaDB 10.4 support
  • Migration of dependencies on Zend Framework to the Laminas project
  • Removal of the core integration of the Signifyd fraud protection code
  • core Braintree module has been removed from the code base

Infrastructure improvements

  • Removal of core integration of third-party payment methods
  • Support for partial-word search for Elasticsearch (new default search engine)
  • PayPal JavaScript SDK upgrade
  • Deprecation and removal of the Web Set Up Wizard
  • Composer update plugin
  • Seller-assisted shopping

Performance improvements

  • Improvements to customer data section invalidation logic
  • Multiple optimizations to Redis performance. 
  • Improved caching of results of SQL queries to inventory tables
  • Improvement of up to 25-30% to Quick Order add-to-cart performance.

Other 

  • Adobe Stock Integration v2.0
  • New Media Gallery
  • Inventory Management
  • GraphQL
  • PWA Studio

Other, for more information refer Magento official devDocs